Function #48: Manage fixed installment payments using Zoho Books

Function #48: Manage fixed installment payments using Zoho Books



Hello everyone, and welcome back to our series!

Businesses offer installment payment options to their customers, particularly for expensive purchases, to ease the financial burden on them. By breaking down the total cost into smaller, more manageable payments, businesses can attract a wider audience who may not be able to afford large upfront payments. This approach not only increases the likelihood of making more sales, but also helps to spread revenue over time, improve cash flow, enhance customer satisfaction and loyalty, and provide a competitive advantage in the market.

We receive numerous requests from our users regarding the handling of these installment scenarios. We heard you loud and clear. Today, we are excited to share a solution that utilizes custom functions to manage installment payments in Zoho Books.

Let's take the example of Mr. John Hector, who wants to buy a 75-inch TV from Zylker Electronics, priced at a hefty $2,300. He is finding it difficult to pay the entire amount upfront. Therefore, Zylker Electronics offers him the option to pay in installments. They mutually decide that John will spread the payment over 5 months, committing to monthly installments of $460 until he settles the entire purchase amount. Let's delve into how this process can be efficiently managed within Zoho Books using custom functions.

Firstly, Zylker Electronics should create a sale invoice of $2,300 in their Zoho Books organization. While creating it, they should input the start date of the installment and the number of installments in two custom fields. For instance, if the sale was made on 01.04.2024 and Mr. John agreed to pay in 5 installments starting on 10.05.2024, the start date should be entered as 10.05.2024, and the number of installments as 5.

Two custom functions will come into play: one to generate the retainer invoices to collect the installment payments and another to apply the retainer payments to the sale invoice.

Based on the number of installments entered the function will determine the amount to be charged as monthly installments.
Installment amount = Total Amount Payable / No of installments = $2300 / 5 = $460.

On the specified start date, the first function will create and send the retainer invoice for the first installment. Once the payment for this installment is recorded, the second function will apply it to the sale invoice, reducing the balance accordingly. The process repeats each month, generating and sending retainer invoices for subsequent installments until all 5 are completed. Each retainer invoice will be for $460 and due on the 10th of every month for 5 consecutive months. As each retainer invoice is paid, the second function will automatically apply it to the sale invoice, thereby recognizing the income.

Prerequisites: 

1. Create a Connection named "zbooks" to successfully execute the scheduler. You can watch the GIF attached below to know how to create the connection.




2. Create a Date-type custom field called "Installment Start Date" for the Invoices. This field will be used to input the starting date for installment payments.



3. Create a Decimal-type custom field called "Number of installments" for the Invoices. Here, you'll specify the agreed-upon number of installments. Using this information and the total invoice amount, the function will determine the monthly installment amount.



4. Create a new Retainer Invoice template with the document title "Installment Payment". Then, copy the template ID (You can get the ID from the URL of the webpage) and substitute it into line 26 of the first function. This ensures that all the retainers sent for collecting installment amounts are correctly labeled.



(1) Custom Function to create Retainer Invoices:

Navigate to Settings -> Automation -> Workflow Actions -> Custom Functions -> +New Custom Function -> Module -> Select Invoice -> Add the function code from this
GitHub Link -> Save. 



(2) Workflow Rule to create Retainer Invoices:

Go to Settings -> Automation -> Workflow Rules -> +New Workflow Rule and set up the workflow rule as shown below:-




In the final step of this workflow rule, associate the custom function you created and then hit Save.

(3) Custom Function to apply installment payments to the sale invoice:

Navigate to Settings -> Automation -> Workflow Actions -> Custom Functions -> +New Custom Function- > Module -> Select Retainer Invoice -> Add the function code from this GitHub Link -> Save. 



(4) Workflow Rule to apply installment payments:

Go to Settings -> Automation -> Workflow Rules -> +New Workflow Rule and set up the workflow rule as shown below:-






In the final step of this workflow rule, associate the custom function you created and then hit Save.

We really hope that today's functions help you streamline the process of handling installments in Zoho Books. If you need any assistance in customizing the functions to better suit your needs, please do not hesitate to contact us at support[at]zohobooks[dot]com. We are always happy to help you. 

Also, for those looking to collect varying percentages of the invoice total as installments, stay tuned! 

Regards,
Shireen Farhana
Zoho Books

    Access your files securely from anywhere









                          Zoho Developer Community




                                                • Desk Community Learning Series


                                                • Digest


                                                • Functions


                                                • Meetups


                                                • Kbase


                                                • Resources


                                                • Glossary


                                                • Desk Marketplace


                                                • MVP Corner


                                                • Word of the Day


                                                • Ask the Experts



                                                          • Sticky Posts

                                                          • Introducing Invoice Consolidation for Offline Subscriptions

                                                            Hello Folks, Glad to announce the feature of Invoice Consolidation for Offline Subscriptions. If you are having multiple subscriptions for your customers, now, you can send a single consolidated invoice for all the Offline Subscriptions that are getting renewed on the same date. Advantage?  Customers will be receiving single invoice instead of multiple invoices upon renewal. Also reduces your efforts in follow-up with your customers for payment collections. For Example: If Customer has Subscription
                                                          • New feature: Create back-dated subscriptions

                                                            Hello from the Zoho Subscriptions team. :)   We’re happy to announce that today marks the launch of a much-awaited feature: creating back-dated subscriptions!   From here on out, whenever you create a new subscription with an activation date that is earlier than the present date, you’ll no longer get an error. Instead, you'll be creating a back-dated subscription. This means that the subscription started at that earlier point in time. The next billing date will be calculated automatically based on
                                                          • Announcement Regarding Notification Emails

                                                            Hello Everyone! This announcement is regarding the admin notification emails which you've been receiving from the email address "support@zohosubscriptions.com". From the 1st of October, 06:00 GMT, the emails with the following subjects will be sent from "no-reply@zohosubscriptions.com". Unable to send invoice for the profile - {profile_name} Unable to process auto payments. If you have set up any filters or workflow in your email account, please add "no-reply@zohosubscriptions.com” and  “support@zohosubscriptions.com”
                                                          • Zoho Subscriptions plugin for WordPress

                                                            Zoho Subscriptions plugin for WordPress allows you to easily embed your plan specific checkout page in an iframe with just a few mouse clicks and without a single line of code. How can WordPress Zoho Subscriptions Plugin boost your productivity? It's now easier to embed Zoho Subscriptions checkout page in your WordPress site. Forget the old method of logging in to Zoho Subscriptions, copying a URL and scripting to make adjustments. All this can be done automatically through this plugin. A great time
                                                          • Indian GST organisation Migration Guide

                                                            With respect to the new GST regime releasing on July 1, 2017in India, Zoho Subscriptions Indian edition is also gearing up to make your business GST Ready. This article focuses on how to get your existing organisation in Zoho Subscriptions to migrate to the new GST regime.    Note:  Any organisation created on or after July 1, 2017 will already be GST ready. You wouldn't have to migrate your organisation. Migrating your existing organisation to support GST To migrate your existing organisation to


                                                          Manage your brands on social media



                                                                Zoho TeamInbox Resources



                                                                    Zoho CRM Plus Resources

                                                                      Zoho Books Resources


                                                                        Zoho Subscriptions Resources

                                                                          Zoho Projects Resources


                                                                            Zoho Sprints Resources


                                                                              Qntrl Resources


                                                                                Zoho Creator Resources



                                                                                    Zoho CRM Resources

                                                                                    • CRM Community Learning Series

                                                                                      CRM Community Learning Series


                                                                                    • Kaizen

                                                                                      Kaizen

                                                                                    • Functions

                                                                                      Functions

                                                                                    • Meetups

                                                                                      Meetups

                                                                                    • Kbase

                                                                                      Kbase

                                                                                    • Resources

                                                                                      Resources

                                                                                    • Digest

                                                                                      Digest

                                                                                    • CRM Marketplace

                                                                                      CRM Marketplace

                                                                                    • MVP Corner

                                                                                      MVP Corner







                                                                                        Design. Discuss. Deliver.

                                                                                        Create visually engaging stories with Zoho Show.

                                                                                        Get Started Now


                                                                                          Zoho Show Resources

                                                                                            Zoho Writer

                                                                                            Get Started. Write Away!

                                                                                            Writer is a powerful online word processor, designed for collaborative work.

                                                                                              Zoho CRM コンテンツ






                                                                                                Nederlandse Hulpbronnen


                                                                                                    ご検討中の方




                                                                                                          • Recent Topics

                                                                                                          • Bug Report and Suggestions for Improvement in Zoho Applications

                                                                                                            Hi Zoho Team, I’d like to report a few bugs and improvement suggestions I’ve noticed while using Zoho products: Zoho Cliq Video Call: The camera sometimes turns off automatically during video calls. This seems to be a bug — please check and fix it. Zoho
                                                                                                          • Customize User Invites with Invitation Templates

                                                                                                            Invitation Templates help streamline the invitation process by allowing users to create customized email formats instead of sending a one-size-fits-all email. Different invitation templates can be created for portal users and client users to align with
                                                                                                          • Zoho CRM Workflow and Function Backup Options

                                                                                                            Hi everyone! I have been able to make several backups of my CRM data and noticed that the Workflows and Functions are not included in these backups. To my knowledge, there is no backup feature for workflows and functions, which is problematic in of itself.
                                                                                                          • ListObjects is recognized by VBA

                                                                                                            Sub addNewRow() Dim ws As Worksheet ' Set your worksheet name Set ws = ThisWorkbook.Sheets("Invoice") ' Set your table name (change "Table1" to your actual table name) ws.ListObjects("InvItems").ListRows.Add End Sub I am getting Unknown function: Li
                                                                                                          • KPI Widget dashboard select periods

                                                                                                            I have a problem with selecting periods as a user filter. In the beste scenario I would like to have to have a period filter like Google Analytics has of Datastudio (see attachment). In the KPI widget I "Group by "inquiry_date" on week&Year". It selects
                                                                                                          • Need a way to secure Prefill URLs in Zoho Forms (hide or encrypt prefilled values)

                                                                                                            Hi everyone, I often use Zoho Forms with prefilled URLs to simplify the user experience — for example: https://forms.zohopublic.com/.../form?Name=David&Amount=300 However, the problem is that all prefilled values are visible and editable in the link.
                                                                                                          • Can’t send emails from Zoho CRM after adding a new user — verification codes not received

                                                                                                            Hi everyone, We recently added a new user to our Zoho CRM account and purchased an additional license. Since then, we haven’t been able to send any emails from Zoho CRM. Our Zoho Mail accounts are working perfectly, we can send and receive emails directly
                                                                                                          • Can I add Conditional merge tags on my Templates?

                                                                                                            Hi I was wondering if I can use Conditional Mail Merge tags inside my Email templates/Quotes etc within the CRM? In spanish and in our business we use gender and academic degree salutations , ie: Dr., Dra., Sr., Srta., so the beginning of an email / letter
                                                                                                          • CRM for email in Outlook: how to ignore addresses?

                                                                                                            We’re using the "Zoho CRM for email" add-in for Outlook. When opening an email, the add-in displays all email addresses from the message and allows me to add them to the CRM or shows if they’re already contacts. However, sometimes people listed in To
                                                                                                          • Scheduling Calls in CommandCenter / Blueprints

                                                                                                            I would love it if you could add a function to schedule a call in the lead's record for a future date. I know you can add a Task by going to Instant Actions > Task and completing the form: These tasks go into the lead's record under Open Actions. But
                                                                                                          • Workflow Creation with Zia gets stuck

                                                                                                            It gets stuck here:
                                                                                                          • Quickly send emails and sync conversations with custom email addresses in CRM

                                                                                                            Editions: All editions DCs: All DCs Release plan: This enhancement has been released for customers in all DCs except IN and US. We will be enabling it for IN and US DC customers soon. [Update on 22 May 2024] This enhancement has been released for all
                                                                                                          • Zoho製品と生成AIツールの活用について

                                                                                                            いつもありがとうございます。 弊社では、Zoho Oneを契約し、CRMを軸として、見込み客の管理から商談、その後の受注や請求の管理、サポート業務(Desk)、業務データのレポーティング(Analytics)などを行っております。 Zohoサービス自体には、Ziaというツールが搭載されているかと存じますが、それ以外の外部の生成AIツールと連携した活用などもできるのでしょうか?具体的には、CopilotなどがZohoに登録されているデータや情報を見て、対話型で必要なデータを提示してくれたり、商談や蓄積されたメモなどを分析してユーザが知見を得られるような活用ができないか、と考えております。
                                                                                                          • File Field Validation

                                                                                                            Hello all, We are tracking our customer NDA agreements in our CRM and have created 2 fields to do so, an execution date field and a file upload field. I want to create a validation rule to ensure that when the execution date field is populated that the
                                                                                                          • Work with Contacts who use multiple Emails / Manage obsolete Email addresses without loosing Emails in Context

                                                                                                            Hello List Work with Contacts who use multiple Emails Only after 1 week in using Zoho CRM productively we have contacts which randomly use 2 different email addresses. From the concept I've understood that Zoho CRM offers two email fields which are recognized
                                                                                                          • New Field in CRM Product Module Not Visible in Zoho Creator for Mapping

                                                                                                            I created a new single-line field in the Products module in Zoho CRM. Zoho CRM and Zoho Creator are integrated, but the newly created field in CRM is not visible in Zoho Creator when I try to map fields.
                                                                                                          • Send WhatsApp voice messages from Bigin

                                                                                                            Greetings, I hope all of you are doing well. We're happy to announce this enhancement we've made to Bigin. Bigin's WhatsApp integration now supports audio messages, so you can record and send voice messages. This makes it easier to handle customer questions
                                                                                                          • Microsoft Teams now available as an online meeting provider

                                                                                                            Hello everyone, We're pleased to announce that Zoho CRM now supports Microsoft Teams as an online meeting provider—alongside the other providers already available. Admins can enable Microsoft Teams directly from the Preferences tab under the Meetings
                                                                                                          • I want to subscribe 1 professional user but the email only 250 per day?

                                                                                                            When I subscribe 1 professional user, I am only able to send 250 email per day? So less? Or is it typo, 2500 rather than 250? Any sale agent or friends can clear my doubt? Thank You
                                                                                                          • Cliq does not sync messages after Sleep on Mac

                                                                                                            I'm using the mac app of Cliq. When I open my mac after it was in sleep mode, Cliq does not sync the messages that I received. I always have to reload using cmd + R, which is not what I want when using a chat application.
                                                                                                          • How to add a % Growth column for year-over-year comparison (2024 vs 2025)

                                                                                                            Hello, I am trying to build a monthly revenue comparison between 2024 and 2025 in Zoho CRM Analytics. My current setup is: Module: Deals (Affaires) Filter: Stage = Closed Won Date field: Closing Date Grouping: By Month Metrics: Sum of Amount for 2024,
                                                                                                          • How do you map a user picklist field to another user picklist field.

                                                                                                            In Zoho Projects, I'm trying to map a custom field (user picklist) in Task Details to a field (user picklist) in the Project Details. How do you get the two to map to each other? This is what I currently have that works for my other fields but doesn't
                                                                                                          • Explore Competitive 3D Scanner Prices at Protomont Technologies

                                                                                                            The genesis of Protomont Technologies emerged from the collaborative efforts of the founders in 2019, both the founders shoulder an enormous experience in the world of 3D Printing. Protomont Technology aims to craft your vision with creativity, empowering
                                                                                                          • New and improved API resources for Zoho Sign Developers

                                                                                                            Hello, Developers community! We know that for you, an API's real value depends on how quickly, easily, and reliably you can integrate the it with your application. That's why we're excited to talk about the recent improvements to our developer resources,
                                                                                                          • stock

                                                                                                            bom/bse : stock details or price =STOCK(C14;"price") not showing issue is #N/A! kindly resolve this problem
                                                                                                          • Marketing Tip #5: Improve store speed with optimized images

                                                                                                            Slow-loading websites can turn visitors away. One of the biggest culprits? Large, uncompressed images. By optimizing your images, your store loads faster and creates a smoother shopping experience leading to higher sales. It also indirectly improves SEO.
                                                                                                          • Why can I not choose Unearned Revenue as an account on items?

                                                                                                            Hello, I do not understand why we don't have the ability to code an item to unearned revenue. It is not an uncommon situation to have in business. I understand that there is the Retainer invoice as an option, however that doesn't really work for us. Our
                                                                                                          • Form Submission Emails

                                                                                                            Is there a current delay with submission emails being sent? We've had 10-20 forms completed today but only a handful of emails.
                                                                                                          • Rules not working properly

                                                                                                            I created a rule to display certain fields on certain states. But it seems to be not working. It hides the fields even when I selected California, (which is a state that should show the fields when selected)
                                                                                                          • Notebook font size issue

                                                                                                            If I copy something from somewhere and paste it in my notebook, the font size becomes smaller.
                                                                                                          • Sign in process is beyond stupid. I'd rather plug my phone into USB and copy files than sign in to this POS.

                                                                                                            792 clicks and fields to fill in just to get into a 3rd rate app is too stupid for me.
                                                                                                          • Ampersand in URL parameter // EncodeURL does not work

                                                                                                            Hi Zoho, I have a url link with a parameter. The parameter is including ampersand in some cases (Can be "H&M" or "P&I") When trying to use %26 instead of "&"  (the result I get using EncodeURL()) I get H%26M instead of H&M in the parameter field. How can I solve this? Thanks! Ravid
                                                                                                          • how can we create in zoho crm a new contact when the looup does not find a similar existing one

                                                                                                            In forms/integrations/zoho crm / ne w record tab, contact name is to be mapped with my form contact name. When I go in biew edit/lookup configuration, I don t get the options (help dedicated page simply repeat the same info you get in the app) and does
                                                                                                          • Directory Websites

                                                                                                            Directories are a good website category to gain search engine traffic. Directories for a professional service category as an example can help their members in search results over their individual website. It would be nice to have a directory template
                                                                                                          • Manage Task on Mobile

                                                                                                            How do we manage our task on mobile devices? It seems that there should be a standalone mobile app to handle the new task features. The new features released in regards to Task management are great by the way! Now we need to bring that all together in
                                                                                                          • Set Default Payment Method & Default account

                                                                                                            Hi, I would like to know how to set the default payment method and default bank account when recording payments in zoho books. At present we have to change these fields everytime we record a payment, which leads to potential error and as we have a very
                                                                                                          • Customer Portal on Zoho Desk

                                                                                                            Hi, I'd like to know more about the items below I found when setting up the Customer Portal on Zoho Desk. Could someone help me explaining these in details? Especially the 2nd and 3rd point. Thanking you in advance! Permissions Customers can sign up for Customer Portal Customers can view tickets of their organization (contacts) Customers must register to access Customer Portal Display Community in Customer Self Service portal
                                                                                                          • Slow Performance on desk.zoho.com. 11/3/2025

                                                                                                            I’m not seeing any active service alerts for desk.zoho.com, but everyone on our account is currently experiencing very slow load times when opening or navigating tickets. We’ve already tried the standard troubleshooting steps — clearing cache and cookies,
                                                                                                          • "Authorize to Access Your Account"

                                                                                                            Hi, I'm trying to log into cliq on my phone but I can't. It says "Authorize to access your account - Verify your identity to access your account using oneAuth credentials", and asks for a password. I tried maybe 100 different passwords and nothing works.
                                                                                                          • Books API Receiving an Error that Doesn't Make Sense when Creating Credit Note - trying to use 'ignore_auto_number_generation' argument

                                                                                                            Hello, I'm working on a newly created routine and I'm getting an error that doesn't make sense when trying to create a new Credit Note. Here is my POST request. Endpoint: https://www.zohoapis.com/books/v3/creditnotes?organization_id=########## Body:     {
                                                                                                          • Next Page