Payment Aggregator
Service model where PSP opens master merchant account and processes payments for multiple sub-merchants. Faster onboarding but shared risk pool.
Overview
What is Payment Aggregator?
A payment aggregator (also called a payment facilitator's simpler cousin) lets many small merchants process transactions through one shared master merchant account rather than each opening their own. Stripe, Square and PayPal are the best-known examples — sign-up is instant and largely automated, versus the weeks a traditional dedicated merchant account typically takes to underwrite and approve.
Onboarding is deliberately lightweight: a merchant signs up online, passes basic KYC checks, and becomes a sub-merchant of the aggregator's master account. The aggregator then handles settlement directly and charges a flat blended rate — typically around 2.9% + $0.30 per transaction — regardless of the merchant's actual risk profile or volume.
That flat-rate simplicity comes from pooling risk across every sub-merchant on the platform, which is exactly why aggregators reject high-risk categories outright — CBD, nutra, adult and gambling merchants included. A high-risk business that slips through and starts processing typically gets terminated the moment the aggregator's monitoring flags the vertical, with funds already collected held for 90-180 days; a $100K-a-month merchant can suddenly find $30K of their own revenue frozen.
Aggregators work well for low-risk merchants under roughly $500K in annual volume, or for testing a new product before committing to underwriting. High-risk merchants should skip aggregators entirely and go straight to a dedicated merchant account, while fast-growing low-risk merchants should plan to graduate off the aggregator around the $500K mark, where dedicated accounts start offering meaningfully better rates.
In depth
Everything you need to know.
Aggregator obtains master account. Merchants sign up online. Basic KYC. Become sub-merchants. Transactions process through master. Aggregator handles settlement, charges 2.9% + $0.30 typically.
Democratizes processing - $50K merchants can't get traditional accounts. But aggregators reject high-risk: CBD, nutra, adult, gambling. High-risk attempting aggregators: instant termination, funds held 90-180 days. $100K monthly merchant with $30K held faces crisis. Need dedicated accounts.
Illustrative example — not a specific client engagement.
- Small merchant $80K used Stripe. At $500K, switched to dedicated at 2.1%, saving $4.8K annually.
- CBD used Square. After $40K, terminated. $12K held 180 days. Business nearly collapsed.
- Marketplace used PayPal. Held $280K for 6 months after one seller's chargebacks. Couldn't pay 499 sellers. Became PayFac.
- Use for: low-risk, <$500K volume, testing
- High-risk: dedicated accounts from day one
- Read acceptable use policies
- Graduate at $500K - better rates
- Maintain backup processing
- For platforms: consider PayFac
- Monitor policy changes
- High-risk using aggregators - termination, funds held 90-180 days
- Not reading terms - verticals prohibited
- Single aggregator - termination leaves no processing
- Not understanding shared risk
- Assuming rates competitive at scale
- Not planning growth
Keep exploring
Related terms
Put this to work
for your business.
MIDs structures high-risk acquiring across 30+ banks — smart routing, fraud and chargeback control built in. Tell us your category and volume and we'll build the setup around it.