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

    • Sales IQ - Zobot en multilangue

      Bonjour, J'ai un Zobot installé sur mon site depuis longtemps. J'ai ajouté plusieurs langues, dans la configuration et dans le générateur de bot sans code Pourtant, le Chat continue à s'afficher en Francais. Comment enclencher le multilangue en front

    • Streamlining E-commerce Photography with AI Background Tools

      Hey Zoho Community, I’ve been messing around with ways to make product images less of a headache for fashion brands on Zoho Commerce. You know how boring generic backdrops can get, and how much time traditional photoshoots eat up, right? I tried out this

    • Unable to Assign Multiple Categories to a Single Product in Zoho Commerce

      Hello Zoho Commerce Support Team, I am facing an issue while assigning categories to products in Zoho Commerce. I want to assign multiple categories to a single product, but in the Item edit page, the Category field allows selecting only one category

    • Collapsing and expanding of lists and paragraphs

      hello Would you ever implement Collapsing and expanding of lists and paragraphs in zoho writer ? Best regards

    • Saving issue

      First problem I opened a MS word file in writer. after the work is done, it does not save instantly, I waited for like 10min and it still did not save. second problem When I save a file, then file gets saved as another copy. I just did save, not save

    • Serious problem with file that contains non-ASCII characters

      I imported many pdf files from Evernote whose names contain Hebrew characters, such as ח רבעוני - ביטוח חיים - סוף רבעון 3 - לשנת 2025.pdf I have two very serious problems: (1) Zoho Notebook cannot open the pdf file; (2) It cannot download the pdf file.

    • Notifications Feeds unread count?

      How do I reset the unread count on feeds notifications?  I've opened every notification in the list.  And the count never goes to zero.

    • Zoho Finance Limitations 2.0 #3: Can't assign a Contact to a Finance Record (estimate, sales order or invoice)

      If you use a business to business scenario with different contact people within the company you can't assign a finance record (estimate, invoice, etc...) to that person. Why this matters? No way to find out which person placed the order without manual

    • Zoho Community Digest — Febrero 2026

      ¡Hola, comunidad! Un mes más os traemos las novedades más interesantes de Zoho para febrero de 2026, incluyendo actualizaciones de producto publicadas oficialmente, cambios de políticas y noticias del ecosistema. Pero antes de lanzarnos a las actualizaciones,

    • Disable Zoho Contacts

      We don't want to use this app... How can we disable it?

    • Filter button in the Zoho Sheet Android App doesn't toggle on

      I am a new Zoho Sheets user and experiencing a specific issue with the filter functionality in the Android mobile application. Detailed Issue Description: The filter icon appears correctly in the toolbar. Upon tapping the filter icon/button, the toggle

    • 【Zoho CRM】商談タブへのデータインポート

      Zoho使用前にエクセルで管理していた商談情報を、Zoho一括管理のため、商談タブにインポートしたいのですが、お客さまの氏名だけが紐づけられませんでした。 「Zoho CRMにインポートする項目を関連付ける」のところが画像のようになっています。 （弊社では、「姓」を「★個人データ名」という項目名に変更し、フルネームを入れて使用しています。） どのようにしたら氏名をインポートできるかご存じの方がいらっしゃいましたら、ご教示いただきたく、よろしくお願いいたします。 （投稿先が間違っていましたらご指

    • CRM Cadences recognise auto-responses

      I have leads in a Cadence. I get an auto-responder reply "I'm out of the office..." Normally Cadences seems to know that isn't a real reply and keeps the lead enrolled in the cadence. However, today, Cadences has UNENROLLED a Lead who sent an auto-reponse

    • Selecting all notes in a notebook

      In Windows11, I select a notebook and I get a list of notes, but only 30 notes. If I scroll down to the end, I get an additional 30 notes (and at the top it now shows 60 notes). I can keep doing this to eventually see all my notes but this is a real pain.

    • SalesIQ Chat Notifications

      I am the admin of our salesIQ implementation. About two weeks ago, I started hearing/seeing notification for ALL chats messages from monitored agents/chat participants. I don't need to see these, we have a manager who deals with this. I can't stop the

    • How to Create a Fixed Sliding Time Window (D-45 to D-15) in Zoho Analytics ?

      Hello, I would like to create a report in Zoho Analytics based on a sliding time window between D-45 and D-15, with a fixed snapshot of that specific period. The data displayed should strictly reflect activity recorded between D-45 and D-15 only, without

    • Export Zoho Books to another accounting package?

      Is an export feature to Quickbooks or Accpac available (or a form that is easily imported by them)?  My reasons: 1) my accountant, who prepares my corporate tax return, prefers to work with their own accounting system.  If I can convert Zoho books a form that is easily importable into Quickbooks or an Accpac format, this process would be easy. 2) I don't want to keep my data in a proprietary format on the cloud somewhere without a way to easily extract it to a format that can be read my a well established

    • Anchor Links in Dashboards

      Hello,  Our dashboards frequently have multiple sections that would be more easily skipped between using anchor links. Please consider adding an anchor link feature to the text widget? This could be done by adding an anchor link option to the text widget next to the "remove" option (see screenshot). The option would assign an ID to the <div> containing the text widget in the live dashboard. Then, the chosen ID could be linked using a traditional <a href="#link_id"> in the html section of the text

    • Introducing Auto-trigger for Screening Bot

      Still manually sending screening tests after every application? Not anymore. With Auto-trigger for Screening Bot, screening now begins automatically. When a candidate applies for a job that has an attached assessment, Recruit checks whether the test has

    • Importing into Multiselect Picklist

      Hi, We just completed a trade show and one of the bits of information we collect is tool style. The application supplied by the show set this up as individual questions. For example, if the customer used Thick Turret and Trumpf style but not Thin Turret,

    • New 2026 Application Themes

      Love the new themes - shame you can't get a little more granular with the colours, ie 3 different colours so one for the dropdown menu background. Also, I did have our logo above the application name but it appears you can't change logo placement position

    • Add line item numbers to sales order/invoice creation page

      It would be really helpful if there were line numbers visible as we are creating a sales order and/or invoice. There are line numbers visible in the PDF once the sales order is created. I would like to be able to see the line numbers as I am building

    • API to Apply Retainer invoice payment to Invoice

      Hi Team, I could not find  API to apply the Retainer invoice payment to existing Invoice. Can you please help ? Attaching the screenshot

    • Reconciling a month with no transactions

      I'm treasurer for a small non profit cemetery association and I'm trying to reconcile a bank statement for a month that did not have any transactions. Do I skip the month entirely and go a month with transactions?

    • Customize your Booking page using Zia

      We’re excited to introduce an AI-based enhancement that automatically customizes your booking page effortlessly. By simply providing your business website URL, Zoho Bookings can automatically design a booking page that matches or complements your brand

    • Multiple header in the quote table???

      Hello, Is it possible in Zoho CRM to add multiple headers or sections within the Quote product table, so that when the quote is printed it shows separate sections (for example “Products” and “Services”)? To clarify, I’m asking because: This does not appear

    • Feature Request: Render Markdown (.md) files in Zoho Cliq

      Hi, We regularly share Markdown (.md) files in Zoho Cliq. However, when we open these files in Cliq, the content does not render as Markdown—it displays as plain text. This forces us to copy/paste the content into an external Markdown viewer to read it

    • Zoho mail to contacts and leads, but not to accounts?

      We use the accounts tab a lot for our business because they can be linked to the sales orders. Now we want to use the mail add on to link communication of our emails to our accounts. However this is only possible for contacts and leads? It would be convenient

    • API keys not showing in ZeptoMail dashboard

      Hi there, I'm hoping someone can provide some assistance as support isn't replying. I am trying to configure my transactional emails, but the dashboard doesn't show any of my API details - the `div` is there but it's emtpy. Every time I click "Generate

    • Reading from and writing to Zoho Projects Custom Module with Deluge

      Does anyone know if there is a way to read from and write to the Custom Modules that Zoho now supports. I would love to be able to loop through a set of data and create the entities I need to for this new custom module I'm looking to put together.

    • How Does Knowledge Base Search and Article Recommendation Work?

      Hello, I would like to understand how the Knowledge Base search engine works. Specifically, does it search based on: The article title only? The full article content? Both, the article and the content? Keywords? Tags? Also, how does the system determine

    • Zoho Books/Inventory - Restrict Items With Pricebook

      Hi Zoho Team, I'm trying to address as use case where a client needs to restrict which products certain customers can purchase. I have been able to find a way to do this based on the current Zoho Books or Zoho Inventory configuation. My feature request

    • Best Way to Integrate Zoho Campaigns with Amazon SES Without Third-Party Tools

      I am looking for the most seamless and efficient method to integrate Zoho Campaigns with Amazon SES. My goal is to avoid using any third-party automation tools like Zapier, Make, or Pabbly, and instead, leverage Zoho's native capabilities for this integration.

    • Release Notes | January 2026

      We have rolled out a set of powerful new enhancements across Zoho Vertical Studio that bring several long-awaited capabilities to your applications. These updates focus on deeper customization, smarter automation, better reporting, and improved usability

    • How to charge Convenience fee OR payment gateway charges to the end client who is paying the invoice?

      Hello, I am creating this topic after having discussions with various sets of users and have understood that with people moving more and more to digital payments, it is important for the client to enable the "Convenience fee" kind of scenario. I have

    • Card payment surcharge?

      Hi, I would like to offer my customers the ability to pay invoices by card (using the PayPal integration). However, PayPal charges me around 5% to receive a card payment, and I would like to pass on this cost to my customer by way of a card payment surcharge. Is there any way for Zoho Invoice to be set up to automatically add a defined "card processing fee", say 5% of the invoice total, if the customer elects to pay by card? I don't want to add this on to invoice manually, since most of my clients

    • Javascript Error

      I don't know how this happened but I'm constantly getting popup windows with Javascript coming from Notebook. I have no idea why this is happening. Screen shot attached. Thanks, Joe Berry

    • Zoho POS App Hanging Issue – Sales Becoming Difficult

      The Zoho POS app frequently hangs and becomes unresponsive during billing, making it very difficult to complete sales smoothly. This commonly happens while adding items, during checkout, or at payment time, especially during peak hours. These issues cause

    • Tip #62- Exploring Technician Console: Send Ctrl + Alt + Del- 'Insider Insights'

      Hello Zoho Assist Community! This week, we’ll be exploring the Send Ctrl + Alt + Del option in the Technician Console. Let’s jump right in. System administrators often rely on Ctrl + Alt + Del when managing remote devices that have unresponsive applications

    • Disappearing Mouse cursor in Zoho Mail / Windows 11 (Chrome + Edge)

      I'm seeing an issue when writing mails with the light theme with the mouse cursor being white and the document area also being white - making it nearly impossible to see the mouse cursor. I see the problem on Windows 11 under Chrome and Edge. (Yet to

    • Next Page