WhatsApp Business API Pricing India: Cost per Repeat Order

WhatsApp Business API pricing in India has two layers. Meta charges ₹0.8631 per marketing message and ₹0.115 per utility, authentication or service message, and your platform adds a markup plus a monthly fee. Since 1 October 2026, service replies beyond 1,000 per business number each month are billable as well.

A Marketing Director watching CAC rise while LTV stays flat usually asks the wrong question. The question is not which platform is cheapest per message. It is what one repeat order costs, and whether that cost clears your contribution margin.

That is the Post Purchase Silence bottleneck, priced in rupees. Most Indian D2C brands send a flood of broadcasts, or nothing, between the first order and the next. NativeUnit's Retention & LTV Engine exists for that gap, and this guide gives it a unit cost.

This guide uses Meta's own India rate card and the plan pages of Interakt and AiSensy, all read on 20 October 2026. It ends with decision rules you can apply this week.

TL;DR

1. Meta bills per delivered message by category, and a marketing message costs 7.5 times a utility message.

2. GST at 18% sits on top, and the platform's markup and plan fee sit on top of that.

3. From 1 October 2026, service replies past 1,000 per number a month are charged, and so are utility messages inside an open window.

4. A broadcast to your full list costs about ₹39 per click at the average click-through rate. An automated journey costs about ₹9.

5. In our worked example, a repeat order costs ₹65.5 against an assumed ₹300 contribution, and the programme breaks even at a 0.9% reorder rate.

6. The platform choice changes that cost by about ₹4. The Nudge Ratio changes it by up to ₹65.

7. Decision points: about 10,000 marketing messages a month for the cheaper plan, about 1.1 lakh for the premium tier.

8. Meta requires eligible India accounts to bill in INR by 31 December 2026.

What Meta Charges Per Message in India Before Any Platform Takes a Cut

Meta charges per delivered message, by category, and only for messages a business sends to a customer. On its India INR rate card, marketing costs ₹0.8631, and utility, authentication and service each cost ₹0.115. GST at 18% is added on top, and a message from a customer to your business is free.

Meta raised the India marketing rate on 1 January 2026, and the same card applies on every platform.

What Changed on 1 October 2026 and Who Actually Pays More

Until 30 September 2026, replying to a customer inside the 24-hour service window was free. Meta's pricing page lists what changed from 1 October:

1. Service replies are metered. Each business phone number gets 1,000 free service messages a month, and the allowance does not roll over.

2. Beyond 1,000, a service reply costs ₹0.115. According to Business Standard's report on the change, businesses pay for service replies beyond 1,000 per phone number each month.

3. Utility messages inside an open window are charged. Order confirmations and delivery updates no longer ride free inside the window.

4. A payment method must be on file. Without one, Meta will not deliver service messages once the free tier is used up.

5. The Click-to-WhatsApp window stays free. Meta's page says the window can stay open up to 7 days, while some vendor pages still say 72 hours.

A COO or Ops Head should size this before reacting. A support team answering 4,000 service replies on one number pays for 3,000 of them: ₹345, or ₹407 with GST. The fix is small: add a payment method to every number.

Why Full-List Broadcasts Are the Expensive Part of the WhatsApp API

The assumption is that the platform you pick sets your WhatsApp cost. The reality is that Meta's rate is identical on every platform, and the markup is a small share of the spend. The expensive part is volume without return.

A Brand Manager who broadcasts one offer to the full list pays ₹1.02 per customer. That includes people who bought last week or will never buy again.

GoKwik's 2026 WhatsApp report covered 26 billion messages from more than 1,800 D2C brands. According to Outlook Business's coverage of it, broadcast campaigns averaged a 2.6% click-through rate. Automated journeys averaged 11.1%.

Divide the message cost by those rates and the decision appears. At ₹1.0185 with GST, a click costs about ₹39 from a broadcast and about ₹9 from an automated journey, before the platform's markup. If those averages held for your list, every full-list broadcast is a four-times-dearer way to buy the same click.

The pattern we see across brands scaling past ₹20 Cr: the first large WhatsApp bill is a festive broadcast to the whole list. Nobody owned who should receive it.

What Interakt, AiSensy and Wati Add on Top of Meta's Rate

Every platform sells the same Meta messages. What differs is the plan fee, the markup, the seats and how plainly the markup is disclosed. A Marketing Director comparing quotes should line them up from each vendor's own page, read on 20 October 2026.

Three cautions apply: the markup column assumes the rates exclude GST, which neither page states. AiSensy's plan table did not load, so confirm its fee in writing. Wati's page routes to a rate card we could not read, so ask for its India rates.

Markup grows with volume. This is the markup over Meta's rate before GST, by monthly marketing messages.

The Nudge Ratio: The Number That Sets Your Cost per Repeat Order

The Nudge Ratio is the marketing messages you send divided by the repeat orders those messages produce. It is the one number the platform's price list cannot tell you, and it moves cost per repeat order further than any platform switch.

The check takes five steps and under five minutes:

1. Count marketing messages delivered in the last 30 days from your platform's report, not messages sent.

2. Count repeat orders placed within 7 days of a nudge, taken from your store, not from the platform's click report.

3. Divide the first number by the second. That is the Nudge Ratio.

4. Multiply by your marketing rate and by 1.18 for GST. That is marketing cost per repeat order.

5. Add the utility messages per order at ₹0.115 each, and your plan fee divided by repeat orders.

The Break-Even Click in our ChatGPT Ads guide applies the same test to a paid click. Here the unit is the message.

What usually breaks first when a D2C brand adds WhatsApp journeys is ownership. The template list grows faster than anyone can say which category each one bills under.

A Worked Example: Does a Repeat Order Clear Its Cost?

A Founder at a ₹30 Cr supplement brand has 10,000 customers who bought once in the last 90 days. Each gets two reorder nudges, and 4% place a repeat order. Every order triggers four utility messages: confirmation, shipped, out for delivery and delivered.

Every input is illustrative, so substitute your own. GST at 18% applies throughout, with the lowest listed plan fees. That is 20,000 marketing messages for 400 repeat orders, a Nudge Ratio of 50.

The spread across the three platforms is ₹3.9 per repeat order, about ₹1,570 a month. Now test the decision that matters: does the order pay for itself? Assume a ₹900 basket leaves ₹300 of contribution after product cost, shipping and payment fees.

On Interakt Growth, 400 orders earn ₹1,20,000 of contribution against ₹26,195 of WhatsApp cost. That leaves about ₹93,800 a month. The programme breaks even at roughly 87 repeat orders, a 0.9% reorder rate.

That breakeven is also your incrementality test. If the holdout shows only 22% of those 400 orders would not have happened anyway, the programme is at breakeven. Above 22%, it earns its keep.

Now change the inputs the platform does not control, using Interakt Growth as the base.

Doubling the reorder rate saves about ₹65 per order. Choosing the cheapest platform saves about ₹4.

Which Platform at Which Volume: The Decision Rules

A Founder signing a platform contract should test these thresholds against their own volume first.

• Below about 10,000 marketing messages a month, take the lower plan fee. AiSensy's ₹0.132 higher markup costs less than Interakt Growth's ₹1,299 higher fee until about 9,840 messages. Above that point, Interakt Growth is cheaper.

• Above about 1.1 lakh marketing messages a month, price the premium tier. Interakt Advanced saves ₹0.009 per marketing message for an extra ₹1,000, so it repays only past that volume.

• Once markup passes ₹10,000 a month, ask for a no-markup quote. That is about 1 lakh messages on Interakt Growth. Interakt lists an Enterprise plan with no markup, so compare its price against your markup bill.

• If more than five people answer chats, price seats first. Interakt's Growth and Advanced plans include unlimited agents, and Wati prices extra users in dollars. An eight-person support team can outweigh any markup difference.

• Before 31 December 2026, get INR billing confirmed in writing. Meta requires eligible India customers to move all Messaging accounts to INR by then. From 1 January 2027 it will not deliver messages from non-INR accounts.

• Before Diwali, cap the festive broadcast. A full-list send to 50,000 customers costs about ₹50,900 at Meta's rate with GST, and about ₹56,500 on Interakt Growth. Segment first, and set a Nudge Ratio ceiling before the send.

Want Someone to Own This Number Every Week?

For a Founder, picking a platform takes an afternoon. Owning the Nudge Ratio takes someone who reads it weekly and changes the segments, templates and sends when it moves.

NativeUnit builds growth systems for D2C and FMCG brands. Post Purchase Silence is one of the six bottlenecks we work on through the Retention & LTV Engine.

To get your own breakeven, bring three numbers to the 10-minute audit. They are messages delivered last month, repeat orders within 7 days of each send, and contribution per repeat order.

When WhatsApp Pricing Is Not Your Real Problem

Pricing work will not fix every retention problem. A Founder should be honest about which one the brand has:

• Your product has no natural reorder cycle. A mattress or a sofa does not need a reminder, so a nudge sequence only adds cost.

• Repeat intent is low because the product disappoints. If customers do not reorder after delivery, a cheaper message will not change that.

• Your list is small. Under a few hundred past buyers, a manual follow-up from one owner often beats a platform. A NativeUnit engagement would be more than you need.

• Your real leak is acquisition. If CAC is the problem, start with the CAC reduction playbook and the ROAS Four-Term Test before spending on retention messaging. 

Conclusion

WhatsApp Business API pricing in India is two price lists and one number you control. Meta's rate card is fixed, and the platform's markup is small and, on the pages we could read, disclosed. The Nudge Ratio decides whether a repeat order costs ₹40 or ₹130.

When that ratio is measured, templates are audited and a holdout is running, Post Purchase Silence stops being a guess. The Retention & LTV Engine owns the journey from the first delivery update to the second order. The Analytics & ROI Engine keeps cost per repeat order on the same dashboard as CAC.