Attach Rate: The Single Biggest Lever in Embedded Payments - Forward

Attach Rate: The Single Biggest Lever in Embedded Payments

Payments 101

What attach rate actually means

Attach rate: the single biggest lever in embedded payments

One number that tells you how much of your payments opportunity you’re capturing.

The definition
Merchants using your payments product ÷ total merchants on platform

If you have 1,000 merchants on your software platform and 300 are processing payments through your embedded offering — your attach rate is 30%.

What it tells you
The % of your potential payments revenue you’re actually earning. Every merchant not attached is a merchant whose payment volume — and the revenue share that comes with it — is going to whatever bank or processor they signed up with before you had a payments product.

Not to be confused with wallet share — which measures the % of a single merchant’s total payment volume flowing through your platform. Attach rate is about breadth (how many merchants). Wallet share is about depth (how much of each merchant’s volume). Both matter. This piece is about attach rate.

Why a small change in attach rate is a massive revenue event

Same platform. Same merchant base. Completely different payments business.

5,000 merchants. $1M avg annual processing volume each.

Two platforms. A $17M difference in payments income.

Industry average attach is below 20% · Forward partners average 70%

Industry average
20% attach rate
Merchants attached 1,000
Avg volume / merchant $1M
Gross payments revenue $10M
Cost of payments 12%
Payments income $8.8M

Forward partners 70% ATTACH RATE
70% attach rate
Merchants attached 3,500
Avg volume / merchant $1M
Gross payments revenue $35M
Cost of payments 25%
Payments income $26.25M

Payments income difference: 20% vs. 70% attach: +$17.45M / year

What this means at the merchant level: doubling ARPU without raising prices

When a merchant attaches to payments, the revenue impact per customer is transformational.

Typical SMB merchant profile
Annual sales $1M
Volume $700K
SaaS ARPU today $2,400
% paid by card 70%
Net take rate 0.75%

Payments ARPU
+$5,250
Card payment volume $700K
Payments ARPU $5,250 / yr
New combined ARPU $7,650 / yr

ARPU increase (software + payments)
Prior: $2,400
New: $7,650
+219%

No price increase. No new product. Just one attached merchant — and the payments revenue that comes with it.

What drives attach rate up — and what kills it

Attach rate isn’t set at launch. It’s built over time through deliberate decisions.

↑ Drives attach up

↓ Kills attach rate

What this means for your platform

  1. Attach rate is the most underleveraged metric in embedded payments. Most platforms track it loosely if at all. But it’s the single number that most directly determines whether your payments offering is a real business or a feature that never compounds.
  2. The gap between 20% and 70% attach isn’t a product problem — it’s a strategy problem. The merchants are already in your platform. Getting them attached is a function of onboarding design, incentive structure, sales motion, and ongoing activation — not a better payments API.
  3. Attach rate is not a launch metric. It’s an ongoing discipline. The platforms that win on payments treat attach rate the way they treat churn — something actively managed, reported on, and improved every quarter. That’s the difference between a payments feature and a payments business.

We help platforms build and run the attach strategy — not just the payments infrastructure. From onboarding design to ongoing activation, we work alongside your team to move the number that moves the revenue.