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

    • 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

    • Recent Topics

    • Marketer’s Space - Get Holiday-Ready with Zoho Campaigns

      Hello marketers, Welcome back to another post in Marketer’s Space! Q4 is packed with opportunities to connect with your audience - from Halloween, Black Friday, and Cyber Monday, to Thanksgiving, Christmas, and New Year. In this post, we’ll look at how

    • Personalized demo

      can I know more about the personalized demo we are construction company and

    • Can I collect email addresses in a form??

      Can I add new subscribers to my email list (hosted in FloDesk) when they check a box and add their email address on a Zoho form?

    • Zoho CRM Android app updates: Kiosk and multiple file upload support for subforms

      Hello everyone, We've rolled out new enhancements to the Zoho CRM Android app to bring better mobile CRM experience and efficiency. Let's take a quick look at what's new: Kiosk Multiple file uploads for subforms Kiosk Kiosk is a no-code tool in Zoho CRM

    • Alerts for mentions in comments

      We are testing the use of Writer internally and found that when a user is mentioned in a comment, there is no email alert for the mention. Is this something that's configurable, and if so, where can we enable this option?

    • OAuth integration issues

      I'm experiencing persistent OAuth errors when trying to connect Make with Zoho API. I've tried multiple approaches but keep encountering the following issues: First error: 'Invalid Redirect Uri - Redirect URI passed does not match with the one configured'

    • Zoho Mail Android app update: Manage folders

      Hello everyone! In the latest version(v2.9) of the Zoho Mail Android app update, we have brought in support for an option to manage folders. You can now create, edit, and delete folders from within the mobile app. You can also manage folders for the POP

    • validation rules doesn't work in Blueprint when it is validated using function?

      I have tried to create a validation rule in the deal module. it works if I try to create a deal manually or if I try to update the empty field inside a deal. but when I try to update the field via the blueprint mandatory field, it seems the validation

    • Get Zoho Mail API working (including DRE Connector, Oauth Token, ZUID, ZOID & ACCOUNT_ID)

      Disclaimer: I’m not a professional coder! Do you need to use Zoho Mail API? Me too. It lets you do all sorts of things — like reading the complete header of an email, or forwarding an email with its attachments — which is what I wanted to do. But setting

    • Revenue Deferrals

      Does ZOHO books and subscriptions handle Revenue Deferrals?   

    • Can I make a website open inside Zoho whenever I log in?

      Hi Zoho Team, Every day, I check a few websites for updates, for example, Rojgar--result, where I see the latest government job results and notifications. I was wondering if there’s any option in Zoho to make a website like that open inside Zoho whenever

    • Kaizen #214 - Workflow APIs - Part 2

      Welcome back to another week of Kaizen! Last week, we discussed how Zylker Cloud Services used the Workflow APIs to discover and audit all the automations in their CRM, listing every workflow, checking triggers, and understanding their automation limits.

    • Zoho CRM Community Digest - September 2025 | Part 1

      Hello Everyone! September's Here! Before we jump into product updates, and community highlights, here's a quick spotlight! Zoho has launched a Professional Sales Rep Certification course on Coursera, tailored for sales professionals to strengthen their

    • Upload my theme.

      Hello. I would like to upload my own theme, this one: https://themeforest.net/item/panagea-travel-and-tours-listings-template/21957086 Is it compatible and where I upload it? If not I will hire a developer, what do I have to ask when I search for one?

    • Product Updates in Zoho Workplace applications | September 2025

      Hello Workplace Community, Let’s take a look at the new features and enhancements that went live across all Workplace applications this September. Zoho Mail Attach email as EML file in Compose Effortlessly attach emails as EML file in Compose by simply

    • Vehicle Tracking

      we have GPS devices that installed on our vehicles, and we would like to know if it's possible to  get vehicle live location data from the GPS device To Zoho Creator App.   Thank You

    • 🤝 Rencontres, partage et inspiration au Zoho Community Meetup de novembre

      Chers utilisateurs, Bonne nouvelle 🎉 : notre Meetup Zoho Community approche, et nous serions ravis de vous y voir ! 📍 Toulouse : le 25 novembre 📍 Lyon : le 27 novembre (🎯 Il ne reste que quelques places !) Que vous soyez débutant ou utilisateur avancé,

    • Need Help Mapping GST Registration Number Field Between Zoho Books & Zoho CRM + Slow Sync Issues

      am facing an issue with field mapping between Zoho Books and Zoho CRM. I want to map the GST Registration Number field from the Customer module in Zoho Books to a custom GST field inside the Accounts module in Zoho CRM. However, I am getting a warning

    • Notification received when self-assigning tickets

      When I assign tickets in Zoho Desk the relevant agent gets a notification email. When assigning myself a ticket in Zoho Desk, I get a notification email. Now, as I am the person who assigned the ticket to myself, getting a notification in this regard

    • Nouveauté dans Zoho Writer - Création de documents et de modèles assistée par l'IA

      Zia, l’assistant IA de Zoho Writer, soutient les utilisateurs dans l’amélioration de leur écriture et la création de contenus : correction orthographique et grammaticale en temps réel, suggestions adaptées au contexte, détection du plagiat, révisions

    • Session Expired

      I constantly get "Session Expired" and need to relogin or close and open the application again. This gets really frustrating during the day. Is this something that can be solved? This really makes me want to leave the app as it is no go to need to reopen

    • Disable Buttons for Users with Profiles without permission

      Hey, I've noticed that users without permission of setting up things in the marketplace, can still see the icon: On a click, you see this: It would be way better, if they couldn't see this menu icon at all. (Aside from the fact that it completely misplaced

    • Mapping a new Ticket in Zoho Desk to an Account or Deal in Zoho CRM manually

      Is there any way for me to map an existing ticket in Zoho desk to an account or Deal within Zoho CRM? Sometimes people use different email to put in a ticket than the one that we have in the CRM, but it's still the same person. We would like to be able

    • Zoho Analytics - Make text clickable in underlying data

      Hi Community, I have a simple sales report based on a Invoice query table. I have included a link on to each invoice on the table and sent the Invoice number URL to the link. This works find in the query table, but when I click underlying data on the

    • Credit Management: #5 Advanced Refund Policy

      You're subscribed to a well-known SaaS design tool. You've used it to manage your team's projects, create marketing visuals, brochures, and so on. But your needs change over time. Your company may switch to another tool or hire an in-house designer who

    • Exported Slide Image Lacks Portion of the Background Image

      This does not always happen, but when I export (or "download") the rendered image of a slide, it sometimes lacks a portion of the background image. I created a sample slide deck to demonstrate it and shared it with the admins. It is also publicly available

    • Effective Inbox Organization: Folders vs Tags in Zoho Mail?

      I'm exploring the best ways to organize a busy inbox, especially when managing multiple clients or project using Zoho Mail. I’d love to know what works best for others: 1. Do you prefer **folders** (possibly with sub-folders) for each client or project?

    • Piss poor service in Support in Domains and email

      Srijith Narayanan B contacted me today. Very pleasant fellow. Just didn't want to tell him how bad your support service is. You help the person, but you leave before we can finish the next stage. Which causes a lot of frustration. It's been 8 days now

    • Zoho Mail android app update: Block & reject future emails, Report phishing, Spam alerts, Suspicious URL detection

      Hello everyone! In the most recent Zoho Mail Android app update, we have brought in support for the following features: Block & reject future emails Report Phishing Spam alerts in the mail details screen. Suspicious URL detection. Block & reject future

    • Zohomail does not support additional fields in mailto links

      Hello, I set up Zohomail as default composer in Firefox according to manual here: https://www.zoho.com/mail/help/defaultcomposer.html#alink2 Later, I wanted to use this functionality to answer in a Linux mailing list thread using mailto link: mailto:xxxxx@kernel.org?In-Reply-To=%3C727o0521-q24p-s0qq-66n0-sn436rpqqr1p@example.com%3E&Cc=xxxxx%example.org&Subject=Re%3A%20%5BPATCH%20v2%28%29

    • Email address for forwarding is not saving and there's no confirmation ema

      Steps to reproduce: 1. Enter my forward email in the email forward section of the account 2. Click save 3. See a notification stating saved successfully 4. Refresh the page, no forward email is saved 5. No email confirmation received at the forwarding

    • This domain is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details

      This is the error i keep getting when trying to use my Zoho Domain Mail. This domain is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details Find attached. I hope this can be resolved very quickly so i can go on and make

    • Auto CC - Moving Departments

      We have Auto CC e-mail replies to your support mailbox enabled. We have two departments: Helpdesk (helpdesk@domain.com) Delivery (delivery@domain.com) If we create a Helpdesk ticket, and reply, replies are CC'd to helpdesk@domain.com (OK) We then move

    • Unable to see free plan option

      Hello Zoho Support Team, I hope you are doing well. I am trying to sign up for Zoho Mail, but I am unable to see the option for the free plan. Could you please guide me on how I can access or activate the free plan? Thank you for your assistance.

    • Sorten the domain of zoho mail ids

      I recently created zoho mail id and am quite excited with the features. But one issue ig nobody wanna type this big zohoaccounts.com I mean silly bold Suggestion zmail.com (sound gmail) (attraction) or some genz words looks cool

    • Weekly Tips : Customize your Zoho Mail Notifications

      In a professional context, email communication remains one of the most crucial channels for staying connected and managing workflows. Keeping track of your emails, task updates, or important announcements can be overwhelming—especially if you are juggling

    • The attendees will now be redirected to the landing webpage when they exit the webinar, set by the organizer.

      Hello All, In the latest version of the Zoho Meeting iOS mobile app (v1.3.16), we have brought in the below enhancements:   Post Webinar Re-direction Revamped exit UI for Webinar Post Webinar Re-direction:  The attendees will now be redirected to the

    • 550-5.1.1 The email account that you tried to reach does not exist

      Hi, I made sure my domain, SPF, MX records, and DKIM are all verified. I've entered the information correctly in cPanel and Email Routing is set to Remote Mail Exchanger. I am able to send, but unable to receive emails. When I sent a test reply to it, I get the following error: The response was: 550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1 https://support.google.com/mail/?p=NoSuchUser

    • Download API file contents from browser

      Hi Team - is there something being planned to be able to trigger file downloads from the browser via a deluge script? i.e. retrieve a file via API, trigger the file download directly from the browser. Or... using the convertToPdf function (https://www.zoho.com/deluge/help/functions/file/convert-to-pdf.html)

    • When using "locations" in zoho books, can you keep the two locations totally separate from each other?

      I am looking to add a location but I don't want to intermingle the banking or other accounts. I want that to be like two separate independent branches that use different banking accounts, accounts payable, and accounts receivable. The people who are in

    • Next Page