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Free masterclass · Digital Acquisition Excellence (PPC)

MER, CAC and payback: the three numbers a founder asks for

Build the sheet that connects ad spend to contribution margin and payback, from a P&L extract and a platform export.

Sat31Oct 2026
10:00 to 11:00 AM ISTLive online session. Joining link emailed the day before.
60 min live onlineQuestions in chatFree
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What you leave with

The unit economics sheet built from zero during the session.

Platform ROAS is not company profitability. Attendees leave able to build the sheet that connects ad spend to contribution margin and a payback period.

The file you receive: The finished sheet as a template, with the formulas left visible. It is emailed to everyone who pre-registered, whether or not you could attend live.

Marketers who present to founders60 minutesLive demonstration
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Minute by minute

60 minutes of teaching. Questions answered in chat as they arrive.

  1. 00:00

    Frame. The marketer reports 4x ROAS. The founder says the company is losing money. Both are correct.

  2. 05:00

    ROAS against MER. Why platform-reported revenue and company revenue diverge, and by how much typically.

  3. 13:00

    CAC properly built. Channel CAC, blended CAC, and the contribution margin that decides whether either is acceptable.

  4. 27:00

    Build the sheet. A P&L extract and an ad platform export turned into a working model on screen.Live

  5. 41:00

    Payback and honest LTV. Payback period as the budget decision, and why LTV assumptions are usually where the model breaks.

  6. 52:00

    The gap. This is one product and one channel. Multi-channel, multi-SKU businesses need a different model.

  7. 57:00

    Recap, and the chat questions still open.

Who is teaching

The presenter.

Amit Tiwari

Amit Tiwari

Co-founder, aFactor

Technical SEO practitioner and educator. Runs ClickLocal Digital Advertising LLP and teaches SEO in Hindi on YouTube and through four full-length courses at amittiwari.net.

Pre-register

Reserve a seat. It costs nothing.

Runs Saturday, 31 October 2026, 10:00 to 11:00 AM IST. Seats on the live call are limited by the platform, and pre-registered names are admitted first. The replay and the takeaway file go to everyone on the list.

Free. No card, no payment step. By pre-registering you agree to our Privacy Policy. We email you about this session and its replay; nothing else unless you ask.

What happens next

Four emails, nothing else.

01

Now

A confirmation that your seat is held.

02

The day before

The joining link and the two things to have open when the session starts.

03

One hour before

A reminder by email, and one more five minutes before we start.

04

Within 48 hours after

The replay and the file: The finished sheet as a template, with the formulas left visible.

Two questions we expect. Bring your own.

  • What payback period is acceptable for a bootstrapped brand?
  • How do you get finance to share the cost data?

There is no separate Q&A block in this one. Questions go in the chat from the first minute and are answered as they arrive, with anything left over answered by email.

Where this session goes next

The gap, named honestly.

This is one product and one channel. Multi-channel, multi-SKU businesses need a different model.

The Digital Acquisition Excellence (PPC) capstone is a 12-month media plan and an executive strategy presentation, defended with this model.

Digital Acquisition Excellence (PPC) →