By Jordan Blake, marketplace-payments analyst with 9 years of seller onboarding and settlement-operations experience
Last reviewed: July 30, 2026
Finix lets software platforms and marketplaces onboard individual sellers, process customer payments and distribute one transaction among several approved merchant accounts. Each seller’s share enters that seller’s own settlement rather than being treated as a simple bank transfer from the platform. This independent guide is not operated by or affiliated with Finix.
The split must balance exactly. Finix requires the combined seller amounts in a split transaction to equal the full payment amount, so a platform cannot leave an unexplained remainder inside the split instructions.
What Finix does for marketplaces
Finix provides payment infrastructure for software companies and marketplaces that collect money from buyers on behalf of merchants. The platform can onboard sellers, let them accept online or in-person payments, configure seller-level pricing and send settlement proceeds to their bank accounts.
The structure contains at least three parties:
| Party | Role in the Finix flow |
|---|---|
| Buyer | Pays for the product or service |
| Seller merchant | Provides the product or service and receives settlement proceeds |
| Platform | Operates the marketplace, manages sellers and may earn payment fees |
| Finix | Processes transactions and administers the payment infrastructure |
This is different from a direct merchant account. A direct merchant collects money only for its own goods or services. A marketplace may have hundreds or thousands of seller accounts underneath one platform relationship.
Seller onboarding comes first. Finix creates an individual merchant record for each seller and subjects that seller to underwriting before live processing is enabled. The marketplace can manage these accounts through Finix’s platform-payment tools.
How does a split transaction work?
A split transaction begins with one customer payment.
When the platform creates the Finix Transfer, it includes the approved merchant IDs that should receive portions of the payment and the exact amount allocated to each merchant. Finix then creates corresponding Split Transfer records showing how the original transaction was distributed.
Consider an illustrative $120 marketplace purchase:
- Seller A receives $70.
- Seller B receives $35.
- Seller C receives $15.
The three entries total $120, matching the original Transfer.
If the entries total $119 or $121, the split instructions do not satisfy Finix’s documented requirement. The combined split amounts must equal the transaction amount.
That requirement prevents silent imbalances, but it does not decide the marketplace’s commercial agreement. The platform must calculate seller commissions, taxes, delivery allocations or other amounts before sending the split.
Calculate first. Submit once.
A marketplace should preserve its internal order-level calculation beside the Finix Split Transfer IDs. Without that mapping, support staff may see that money reached several settlements but struggle to explain why each seller received a particular amount.
Does the platform keep a commission?
Finix gives platforms several ways to monetize payments.
A marketplace can configure Merchant Fee Profiles for its sellers. Finix documents more than 60 fee options, including blended pricing, interchange-plus pricing, card-brand overrides and fixed transaction charges.
Under blended pricing, the platform sets a percentage and fixed amount intended to cover its markup, interchange and other card expenses. Under interchange-plus, underlying card costs are passed through and the platform adds its chosen fee structure. Card-brand overrides allow different pricing for Visa, Mastercard, American Express and other brands.
The Dashboard path is specific: open the merchant’s details, select Account Settings, then use the Fee Profiles tab to view or edit the profile. Transaction-level fees can also be inspected in the Dashboard or through the API.
A marketplace commission and a Finix merchant fee are related but not necessarily identical.
The platform may earn revenue through payment markup, subscription charges, listing fees or another commercial arrangement. Finix’s Fee Profile controls the payment fees collected through the processing system. It does not document every possible amount the marketplace might charge under its seller contract.
What are platform residuals?
Finix calculates platform residuals monthly.
Its documentation defines residuals as merchant fees collected minus Finix costs. These amounts appear in the Dashboard as billing_settlements, and Finix also provides an income statement for reviewing the calculation.
The formula is simple in concept:
Seller fees collected − Finix costs = platform residual
Yet the result can be negative.
Finix warns that residuals may fall below zero when merchant fees are insufficient to cover Finix costs. Some contracts also contain a revenue-share split that changes what the platform receives.
This means a platform can process substantial volume without earning positive payment revenue.
Suppose the marketplace charges sellers $8,000 in payment fees for a month, while Finix costs and contractual adjustments total $8,600. The platform’s illustrative residual would be negative $600. This example explains the calculation and is not a published Finix customer result.
Inspect residuals monthly. Skip assumptions based only on transaction volume.
How do sellers receive their money?
Each approved seller accumulates payments, refunds, adjustments and fees inside a settlement. When Finix approves that settlement, it creates a Funding Transfer that sends the resulting payout to the seller’s configured bank account.
The amount deposited is not necessarily the seller’s gross sales.
A settlement can include:
- Customer payments
- Refunds
- Disputes
- Processing fees
- Platform fees
- Adjustments
- Prior funding corrections
Finix documents the Dashboard route for examining settlement details: go to Transactions > Payments, open the payment, find Transaction Flow, select the menu beside Payment Added to Accruing Settlement, then choose View Settlement.
That path is more useful than comparing the seller’s bank deposit with one customer order. A payout often contains several transactions and deductions.
Some merchants are configured for automatic settlement release. Others may require a manual release action.
The arrangement varies by account.
What happens when an order is refunded?
Refunds make split payments more complicated because the original customer charge may have been allocated among several sellers.
Finix’s Split Transfer resources show how the original Transfer was distributed, while individual seller settlements reflect the resulting money movements. A dispute decided in the merchant’s favor can also create a credit Split Transfer returning funds to the seller.
The marketplace needs its own rule for assigning refund responsibility.
For example, a three-seller order might be fully refunded because one shipment failed. The commercial agreement must establish whether:
- Every seller returns its share
- Only the responsible seller absorbs the loss
- The platform returns its fee
- Shipping or service charges remain nonrefundable
- The platform temporarily funds the customer refund
Finix processes the configured movement. It does not decide which marketplace participant is contractually responsible.
This is a hands-on reconciliation problem. Customer support may view one order, finance may view three Split Transfers and each seller may see only its own settlement entry. Those records must share a stable internal order identifier.
What does Finix charge a platform?
Finix’s current platform pricing page publishes several account-level charges for its Flat Rate and Dynamic options:
| Published platform item | Listed charge |
| Merchant payout | $0.25 per payout |
| Merchant onboarding | $5 one-time per merchant |
| Active merchant | $2.50 per month per merchant |
| Form 1099-K issuance | $5 per merchant per year |
Custom Pricing is available through direct discussion rather than the same published amounts.
These are not the complete cost of processing.
Card interchange, network assessments, processor charges, disputes, hardware, optional services and the platform’s contractual pricing structure can add other expenses. Finix also permits seller-specific Fee Profiles, so the amount billed to sellers need not match the amount Finix bills the platform.
The active-merchant fee deserves particular attention.
A marketplace with 10,000 approved seller accounts could face a different monthly cost from one with 10,000 registered users but only 600 active merchants. The pricing page should be read alongside the contract’s definition of “active.”
Do not estimate annual platform cost from transaction rate alone.
Can each seller have different pricing?
Yes.
Finix allows platforms to apply different Fee Profiles to different sellers. One merchant could receive blended pricing, another could receive interchange-plus, and a larger seller could have card-brand-specific overrides.
This helps platforms negotiate based on:
- Processing volume
- Industry
- Average transaction amount
- Card-present versus online mix
- Dispute exposure
- Seller tenure
- Commercial partnership
The flexibility introduces version-control risk.
A seller may believe it has one rate while an outdated Fee Profile remains attached to the merchant account. The platform should record the effective date of every commercial pricing change and compare the Finix profile against the signed seller agreement.
A Dashboard edit changes future processing behavior. It does not rewrite the seller contract automatically.
What can sellers see?
Finix supports seller-level access rather than giving every merchant the platform’s full administrative view. Sellers can be limited to their own merchant activity, settlements and related operations.
A white-labeled marketplace may present this environment under its own brand or domain. The seller may consequently interact with a platform-branded dashboard even though Finix supplies the underlying payment infrastructure.
This produces a frequent support mistake: the seller contacts Finix directly about a policy or fee established by the marketplace.
Payment status and settlement records may originate in Finix. Seller commissions, account restrictions and marketplace service charges may originate in the platform’s agreement.
Check who set the disputed term before escalating.
How should marketplaces reconcile Finix activity?
Finix provides downloadable CSV reports covering transactions, settlements, chargebacks, Fee Profiles and failed Funding Transfers. Its reports include a Chargeback Merchant report that places merchants with higher recent dispute activity near the top and a Failed Funding Instructions report covering returned seller payouts.
A reliable reconciliation process should connect four levels:
- The marketplace order
- The original Finix Transfer
- Each Split Transfer
- Each seller settlement and Funding Transfer
The platform should also record:
- Seller Fee Profile
- Refund allocations
- Dispute allocations
- Settlement date
- Bank-payout result
- Platform residual
- Manual adjustments
One missing link can create an apparent shortfall.
For example, the buyer may have paid $200 successfully, but one seller’s payout may be lower because its settlement contains a refund from an older order. Looking only at the current transaction will not explain the deposit.
Use settlement reporting first. Skip manual spreadsheet patches that are not written back to the marketplace ledger.
Finix marketplace FAQ
Can Finix divide one payment among several sellers?
Yes. The platform specifies each approved merchant and amount in the Split Transfer instructions.
Do the split amounts need to equal the customer payment?
Exactly. The combined amounts must equal the original Transfer amount.
Can each seller have a different processing rate?
Yes. Finix supports seller-specific Merchant Fee Profiles with blended, interchange-plus and card-brand pricing options.
Why is a seller payout lower than its sales?
Settlements can contain payments, refunds, fees, adjustments and disputes. Open the settlement details rather than comparing the bank deposit with gross sales alone.
What is a Finix platform residual?
It is the monthly difference between merchant fees collected and Finix costs, adjusted for any applicable contractual revenue share. Residuals can be negative.
How much does Finix charge to onboard a seller?
Finix’s platform pricing page lists a $5 one-time merchant-onboarding fee for its displayed Flat Rate and Dynamic options. Custom arrangements may differ.
Can the platform choose when sellers are paid?
Finix markets flexible payout settings for marketplaces, including seller-level payout configuration. The exact schedules and release controls depend on the platform’s Finix setup.
Map every marketplace order to the original Transfer, its seller-level splits and the resulting settlements. That record is what lets finance explain seller deposits without guessing which fee, refund or adjustment changed the payout.