Splits, Commissions & Seller KYC
Splits, commissions and seller KYC are the marketplace payment controls that allocate a buyer’s payment between seller earnings, platform revenue and processor fees, while preventing payouts to sellers whose identity, business details, bank account or sanctions status have not been verified as required.
A platform payment is not the same as a normal shop checkout. The buyer may see one charge, but the money is economically owed to several parties: the seller, the platform and the payment processor. Treating this as one merchant balance with informal later transfers creates accounting, refund, dispute and regulatory problems. The system needs a ledger view that can explain who earned what, who paid which fee and whether the seller is allowed to receive funds.
Concretely, the platform creates or references a seller account, charges the buyer, records the platform commission, accounts for processing fees and moves the seller’s share into a balance that can later be paid out. Depending on the provider and account model, the seller may be the merchant of record or the platform may take more responsibility. Refunds and disputes must reverse or adjust the same ledger entries, not bypass them with ad hoc bookkeeping.
The trade-off is that payout logic becomes a state machine, not a single transfer call. Sellers may be able to accept orders before they can receive payouts, or may be blocked until missing verification is supplied. Commission timing, fee liability and negative balances all need explicit product and finance decisions. It is commonly misunderstood as merely a UX onboarding step, but KYC is a compliance gate that can stop money movement.
Engineers meet this in marketplace, creator, delivery, booking and agentic commerce systems. In practice it appears as connected accounts, onboarding forms, verification requirements, platform fees, transfers, balance availability and payout status webhooks. Your database should store the seller of record, payout eligibility, commission policy and reconciliation identifiers. The honest answer to many design questions is that it depends on account type, jurisdiction, risk model and who legally sells the goods or services.
Common questions
- What is the difference between a split and a commission?
- A split is the allocation of a buyer payment across parties and fees. A commission is the platform’s share within that allocation. The split answers where the money goes; the commission answers how much the platform earns and when that earning is taken from the transaction.
- Can we collect payments before seller KYC is complete?
- Sometimes, but it depends on the payment provider, account type, country and risk rules. A common pattern is that buying can proceed while payouts remain disabled until required identity, business, tax, bank or ownership information is verified. Your product should show that state clearly rather than treating it as a backend surprise.
- Who pays the processor fee in a marketplace transaction?
- There is no universal answer. The fee can effectively reduce seller earnings, reduce platform margin or be passed through in pricing. What matters is that the decision is modelled explicitly in the ledger, including refunds and disputes, so finance, support and seller reporting all agree.