Billing Management: #6 Usage Billing in SaaS

Imagine a customer shuffling across multiple subscriptions, a streaming service, a music app, cloud storage, and a design tool. Each one charges a flat monthly fee, regardless of how much or how little they use. Some months, the customer barely opens the subscriptions, yet the bill is the same. This is what we call subscription fatigue, meaning resistance from the customer towards fixed, recurring charges that don't match their actual usage.   

For SaaS, subscription fatigue is more than a buzzword. It's a business risk as a flat rate may appear overcharging for one, but others enjoy paying less for their high usage. This imbalance leads to churn, lost revenue and customer grievances.

The solution lies in usage billing, where the customer pays based on what they consume. By aligning cost with value, businesses can increase fairness and unlock sustainable growth. While the principle is simple, it requires a reliable way to track and monetise usage properly.

Zoho Billing Makes Usage Billing Seamless

Zoho Billing provides SaaS businesses with all the tools needed to implement usage-based pricing effectively. Key capabilities that Zoho Billing offers that work effectively for SaaS businesses include:

• Flexible Pricing Tiers: Businesses can create multiple plans with different prices and list them on their websites for direct signup.

• Zero value Plan: For charging customers purely based on usage alone, businesses can create $0 value plan and associate usage addons to charge appropriately.

• Addons: Attach both flat-rated addons and usage-based addons to the subscription.

• Hybrid Model: Combine a flat subscription fee with usage-based addons to monetise additional consumption fairly.

When a usage addon is attached to a subscription, Zoho Billing ensures that usage is tracked, recorded and billed accurately.

Scenario 1:

Sam runs a small consulting firm and uses a mailing application to communicate with his clients. His plan costs $200 and includes 500 GB of storage. Sam stays within the limit most months; however, with many attachments, proposals and reports during a particular month, his mailbox usage exceeds by another 100 GB. The mailing application provides a usage addon for $0.50/GB for the additional usage instead of offering a rigid higher value plan.

Item	Value
Base Subscription	$200
Included Invoices	500
Actual Usage	600
Extra Usage	100
Unit Price for Extra Usage	$0.50/GB
Additional Charge	$50
Total Invoice Value (Base Price+Added Usage)	$250

The billing team records the extra 100 GB usage in Zoho Billing using the manual usage entry method and nothing more. The system automatically calculates $50 overage fee and appends it to the invoice to make the renewal invoice for the period $250.

Scenario 2:

Imagine Smith Enterprise uses a cloud analytics SaaS product. The contract covers a base subscription plan and two usage add-ons: API calls and storage. The base plan costs $500/month and includes 100,000 API calls and 500 GB storage. For every API call they make, an extra $0.01 per call will be charged. Similarly, for extra storage, $0.10 will be charged per GB. 

During a particular month, the company consumes 250,000 API calls and 750 GB of storage, clearly above the usage limit. A subsequent invoice is created, and the charge based on the usage data is added to the base subscription value.

Addon 1		Addon 2
Item	Value	Item	Value
Included API Calls	100,000	Includes Storage	500 GB
Actual Usage	250,000	Actual Usage	750 GB
Extra Usage	150,000	Extra Usage	250
Unit Price	$0.01/call	Unit Price	$0.10/GB
Additional Charge	150,000x$0.01= $1500	Additional Charge	250x$0.10= $25

 

Item	Charges
Base Subscription	$500
API Call Overage	$1500
Storage Overage	$25
Total Invoice	$2025

The company exports the API call logs and storage usage data into a CSV file that can be imported into Zoho Billing. Zoho Billing digests both records, applies the pricing rule separately for each add-on, and generates a consolidated invoice.

Scenario 3: 

Roy runs a digital marketing agency offering various marketing campaigns across social media platforms. Roy owns a SaaS application that generates posts and charges $1.5 per post design. No fixed base price for this, but their clients are purely charged based on the number of posts made. During festive sessions, Roy's team schedules a maximum of 450 posts for a client.

Item	Value
Base Subscription	$0
Rate per post	$1.5
Actual Usage	450 posts
Total Invoice Value ($1.5x450)	$675

 

Using Zoho Billing, Roy records the usage manually or by importing them into the system. With no base price, the platform automatically calculates the total invoice based on the usage. Roy receives a clear invoice for $675, reflecting the value consumed.

SaaS Usage Billing Simplified

Usage Billing ensures that customers pay only for what they consume, whether extra storage, extra API calls, or purely based on the number of posts made. With Zoho Billing, SaaS businesses can seamlessly manage complex and straightforward usage billing scenarios. Adding usage to Zoho Billing is simplified through different methods. It can be added manually if there are fewer subscriptions, and usage data can be imported if there are more subscriptions and usage add-ons. Usage can also be pushed using APIs into Zoho Billing.

Post your use cases in the comments and find the best way to handle them using Zoho Billing.

Next, we will dive into Usage Billing in Telecom and Internet Service Providers, showing how this model powers those sectors. 

• Topic Participants

• Hari Hara Sudhan. S

  

• Sticky Posts

• Community Learning Series | Digest #5 — September 2020

  Dear customers, We're happy to bring you the September edition of our #CommunityDigest! Keep track of your subscription KPIs right from your smartphone: Last month, we enhanced our Android mobile app to help our customers get daily updates on their business health. We got to know from a lot of customers that this has made their job much more easier because they no longer have to keep a reminder to manually check on the previous day's revenue or activations. If you have not downloaded it yet, here's

• Community Learning Series | Digest #4 - August 2020

  Dear customers, We hope you're staying safe and healthy. I'm happy to bring you the fourth edition of our #CommunityDigest with some brand-new updates from us. 1. Daily Business Updates (for Android users) The Zoho Subscriptions Android app has got a cool new update: You can now get a push notification to your smartphone that lets you know how many activations and cancellations have taken place, and what's the net revenue for the previous day. The best part is, you can tell the app when exactly you

• Community Learning Series | Digest #3 - July 2020

  Dear customers, We hope you're staying safe and healthy. We're glad to bring you the July edition of our #CommunityDigest. New community members can view our previous newsletters here. This time, we have two major updates and three interesting topics for you: 1. Zoho Subscriptions Developer Community Since the inception of Zoho Subscriptions, our team believed that the recurring billing platform we provide should be able to offer an extensive API library that empowers businesses to automate most

• Introducing: Community Learning Series | Digest #1 - May 2020

  Dear customers, We hope you are staying safe and healthy. Helping businesses manage their customer subscriptions more efficiently has always been, and always will be, our goal at Zoho Subscriptions. We strongly believe this is possible if we grow together as a community and share what we know with each other. To nurture this shared learning experience, here is our brand-new Community Learning Series! ​ Welcome to the first edition of our digest! Each edition of our community digest includes guides

• Recent Topics

• Addin Support in Zoho Sheet

  Is there any addin support available in zoho sheet as like google marketplace to enhance productivity by connecting with other apps, providing AI data analysis, streamlining business processes, and more?

• Mass Update of Lookup Fields not possible

  Hello List I've created a custom field for Leads and Contacts 'Current Campaign'. This is very Handy as I can filter leads and then related them to a campaign. Everything ready, but then I realized that mass update doesn't work for lookup fields... a

• Zoho Books | Product updates | November 2025

  Hello users, We’ve rolled out new features and enhancements in Zoho Books. From translating email notification templates to the new transaction locking restrictions, explore the updates designed to enhance your bookkeeping experience. Making Tax Digital

• Function #61: Automatically add free item to the invoice based on item quantity

  Hello everyone, and welcome back to another Custom Function Friday! During holiday seasons or special promotions, businesses offer deals like BOGO (Buy One, Get One), Buy 3 Get 1 Free, Buy 2 at 50% off, and much more to attract customers. These promotions

• Notes for Items for Future Purchase Order

  Next time when I order an item, tau have to make some changes in it, that order has to be placed after 4-5 months, I want to save those changes or points somewhere in the item, how will that be possible..

• Schemes of different tyoe

  How can easily apply hourly, day wise or month wise  schemes on Bill, Quantity, and other schemes. Like I want to apply a scheme  Form today to next 7 days .where i can mention in zoho books so scheme will implement automatically to all customers and

• Alphabetically

  How can i arrange alphabetically - (Manage Manufacturer) Field in Item Master 

• Zohomail

  Im trying to setup email address zoho

• Clients not receiving emails

  I've been informed that my emails are not being received. Is there anything that I should look into to rectify this? Many thanks!

• Double opt-in notifications and customizable confirmation messages for your webforms

  Dear CRM Community, We are excited to announce a major upgrade to our Webforms feature. You can now customize the confirmation message shown to your users who double opt-in from your webform and also customize your confirmation emails when they submit

• Enterprise subscription support

  My organization sells subscription services to enterprise customers, which is a different model from the consumer subscription model that Zoho Billing has been designed to support and I beleve this capability should be added. An enterprise subscription

• Free Plan mail accounts details

  In the zoho mail pricing there's a free plan that includes: FREE PLAN Up to 25 Users 5GB* /User, 25MB Attachment Limit Webmail access only. Single domain hosting. I need to make sure that I'm able to create multiple email accounts in the form of: name@domain.com

• ZOHO Mail App Not working

  There seems to be an issue with Zoho Mail App today. It is not connecting to server, internet is working fine, tried uninstalling app and reinstalling, loading circle keeps spinning round. Is there an update on the way?

• No more IMAP/POP/SMTP on free plans even on referrals with NO NOTICE

  Outraged. Just referred a colleague to use her domain (not posting it publicly here) to Zoho, just as I have other colleagues, clients, friends. Expected the exact same free plan features as I have and as everyone else I ever referred got. I was helping

• Unable to receive email - "5.3.0 - Other mail system problem 554-'5.2.3 MailPolicy violation Error delivering to mailboxes'"

  My users are unable to receive emails from one particular domain, apparently. The domain known to be kicked back is whitelisted in the spam control. I sent an email to support earlier this morning but I have not received a reply. The error in the title

• Caixa de saída bloqueada. Como desbloquear?

  Olá, meu e-mail isabela.celli@sivirino.com está com a caixa de saída bloqueada. Não consigo enviar e-mails. Acredito que tenha sido porque mandei o mesmo e-mail para várias pessoas, pedindo uma cotação de serviço. Vocês podem desbloquear para mim? Quantos

• Zoho Forms - Improve the CRM integration field to query data from more than one module

  Hi Forms team, Something I get stuck on regularly is pre-populating a form with data when that data is spread across 2 or 3 modules. For example Contacts, Accounts and Deals. I don't want to duplicate the information in CRM so I end up writing a function

• desbloquear cuenta

  Buenos dias  Cordial saludo Tengo una cuenta libre en zoho mail asociado a un dominio, pero uno de los usuarios se bloquea el correo porque dice que ha excedido el límite de correo, por favor podrian desbloquearla y como hago para que esta persona debe enviar sus correos sin ningun probleama. Gracias de antemano

• Not Receiving Incoming Mail

  I can send emails from my account but I do not receive any. I originally set up forwarding and it worked for a while and then stopped. I turned off forwarding and now do not receive any emails. Could you please check what is causing this issue? Thank you

• Will zoho thrive be integrated with Zoho Books?

  title

• BARCODE PICKLIST

  Hello! Does anyone know how the Picklist module works? I tried scanning the barcode using the UPC and EAN codes I added to the item, but it doesn’t work. Which barcode format does this module use for scanning?

• Making preview pane "stick"

  Hello, Is it possible to fix/dock the preview pane so that it's always there? The modern monitors are all very wide so there's plenty of space horizontally. Having the preview pane disappearing and appearing again when you click on an email message in

• Reason:554 5.1.8 Email Outgoing Blocked

  I have been struggling to set up my email address for some time now; it's difficult to locate what I need. Additionally, I cannot send or receive any emails. I keep receiving the "Reason: 554 5.1.8 Email Outgoing Blocked" error. There doesn't seem to

• Trouble Connecting Zoho Mail via IMAP in n8n – Need Help

  Hi everyone 👋, I'm trying to connect my Zoho Mail account to n8n using the IMAP Email Trigger node, but I'm facing issues getting it to work fully. ✅ Here's what I’ve done so far: ✅ IMAP access is enabled in my Zoho Mail settings ✅ I’m using the correct

• Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked

  Hi, I sent few emails and got this: Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked And now I have few days since I cant send any email. Is there something wrong I did? Also can someone fix this please

• Changes to the send mail Deluge task in Zoho CRM

  Hello everyone, At Zoho, we continuously enhance our security measures to ensure a safer experience for all users. As part of our ongoing security enhancements, we're making an important update on using the send mail Deluge task in Zoho CRM. What's changing?

• Page Rules in Forms

  🚀 Dynamic Page Navigation Implementation I successfully implemented dynamic page navigation based on a user's radio button selection. The goal was to direct users to a specific, corresponding page while ensuring they only interact with the flow determined

• Unusual activity detected from this IP. Please try again after some time

  When i try to create new addresses on my account i am getting this error, it has been 24 hours now and i am still getting this error can anyone help

• Cancellation of written-off invoice

  Hi, Can I know when we cancel the write off (write back), in which FY, the reversal is recorded. It doesn't ask as to when the write off should be cancelled to reflect!. It shouldn't reflect in the year in which the invoice was written off since the Year

• Create Invoice automated with Package

  Does anyone knows how to create an invoice from a SO when we have created the package? We do these manually. and validate that the product packed is the product invoiced (if the order is partially packed) Regards, JS

• I want to create a mailing list, NOT a group.

  Can I create a mailing list in Zoho mail? I just want to be able to make a list of email addresses and give the list a name. Then when I type the list name, the list of email addresses will be automatically listed. When I create a group it sends an email

• how to download all my files

  We are in the middle of zoho docs to zoho workdrive migration. I can not access my zoho docs page. I get redirected immediately to a zoho workdrive page. I would like to download all my files so that I have a backup in case something goes wrong with the

• Read webpage - MSXML2.ServerXMLHTTP

  I have the following VBA script, put together from various sources (mainly zoho forum/help/support, so it once worked, I guess): private Sub GetListOfSheets() Dim url As String Dim xmlhttp As Object Dim parameters As String Dim html As String range("B1").value

• Export Invoices to XML file

  Namaste! ZOHO suite of Apps is awesome and we as Partner, would like to use and implement the app´s from the Financial suite like ZOHO Invoice, but, in Portugal, we can only use certified Invoice Software and for this reason, we need to develop/customize on top of ZOHO Invoice to create an XML file with specific information and after this, go to the government and certified the software. As soon as we have for example, ZOHO CRM integrated with ZOHO Invoice up and running, our business opportunities

• no me llegan los correos a Zoho mail

  No puedo recibir correos pero sí enviarlos, ya hice la modificación de MX y la verificación de teléfonos, qué es lo que ocurre? gracias

• Group Calendar as Default for adding new events, etc?

  Hi, I want to make the group calendar (that I created, if that makes a difference) the default for anything new I add to the calendar. How can I do that? thanks.

• Bookmark Loading is Buffering

  Hi, i clicked on the bookmark tab, around yesterday and since then it's been constantly buffering and doesn't allow me to access the mail's i have tried login in and out but of no help also trying to share a screenshot of the issue around 232 kb size,

• Zoho Webinar custom registration fields into Zoho CRM

  I am pushing webinar registrations into zoho crm as leads and this is working fine. I have added a few custom fields to my webinar registration and I wish for these fields values to get mapped into the resulting CRM lead record. I am not seeing anywhere

• GitLab Extension for Zoho Desk: Connecting support and development for faster resolutions

  Hello everyone! We’re excited to introduce the GitLab Extension for Zoho Desk, an integration that bridges the gap between support and development teams. This allows tickets to be converted into actionable GitLab issues for faster resolutions, better

• Download Google Drive Shared Image/File Using Deluge – Complete Guide

  Download Google Drive Shared Image/File Using Deluge – Complete Guide When working with Google Drive share links inside Deluge, many developers face a common challenge: 👉 How can we download a Google Drive file directly using Deluge? This article explains

• Next Page