Embedding Payments

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Attach Rate: The Single Biggest Lever in Embedded Payments

BY Jordan Greenberg _

Payments 101
Forward · Attach Rate
Attach rate:
the single biggest lever
in embedded payments
You built a payments offering. You went live. Now the question that determines whether it’s a real revenue line or a rounding error: how many of your merchants are actually using it?

You have a payments product. Your merchants can process through it. You’ve checked the box.

Having payments and having a payments business are two completely different things. When people talk about platforms doubling ARPU and unlocking eight-figure revenue lines — attach rate is the whole game.

01
What attach rate actually means
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.

02
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 attached1,000
Avg volume / merchant$1M
Gross payments revenue$10M
Cost of payments12%
Payments income
$8.8M
Forward partners 70% ATTACH RATE
70%
attach rate
Merchants attached3,500
Avg volume / merchant$1M
Gross payments revenue$35M
Cost of payments25%
Payments income
$26.25M
Payments income difference: 20% vs. 70% attach
+$17.45M / year
Same platform. Same merchants. Same product. Just more of them using it.

02b
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
Payment revenue opportunity
Platform ARPU impact
Annual sales$1M
Volume$700K
SaaS ARPU today$2,400
% paid by card70%
Net take rate0.75%
+ 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.

03
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
Payments native to the workflow
When payments live inside the software — not as a separate tab or external link — merchants attach because it’s the path of least resistance. Friction is the enemy of attach.
Native UX
Onboarding that converts
The moment a new merchant signs up is your highest-leverage attach window. Platforms that prompt payments activation during onboarding — not weeks later — see dramatically higher attach.
Onboarding
One software. Everything runs inside it.
The most powerful attach story isn’t pricing — it’s elimination. When a merchant realizes they can run their entire business without leaving your platform, the swivel chair disappears. No separate terminal. No separate portal. No reconciling two systems at the end of the day. That’s not a feature. That’s a reason to never leave.
Merchant value prop
Showing merchants what they actually pay today
Most merchants have no idea what they’re paying their current processor. When you show them clearly — often 5%+ all-in once you add interchange, assessments, and processor markup — the conversation changes immediately.
Cost transparency
↓ Kills attach rate
No active attach strategy
Most platforms launch payments, tell their sales team, and wait. Attach rate doesn’t grow passively. It requires ongoing campaigns, in-app prompts, and someone accountable for the number.
Go-to-market
Merchants already have a processor
Existing relationships are the #1 attach barrier. Switching costs are real — especially for merchants with saved card-on-file data, existing disputes, or accounting integrations built around their current processor.
Switching friction
Your customers are swivel-chairing payments
If merchants are toggling between your software and a separate payments tool to run their business, they’re not attached — they’re tolerating. Every swivel chair is a churn risk and a revenue miss hiding in plain sight.
Product positioning
Mispriced payments
If your embedded payments pricing is out of step with what the market will bear, merchants won’t switch — even when the experience is better. Pricing needs to be competitive enough to remove the last objection, not just the first.
Pricing

→
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.

Forward · Embedded Payments
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.

Forward · Payments 101
Part of our ongoing series on embedded payments for SaaS
Figures are illustrative. Actual economics vary by platform, merchant mix, and processing volume.

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