Processing
Percentage fees, per-transaction fees, network charges, international cards, manually entered payments, refunds, disputes, and other applicable charges. Request a worked example with assumptions clearly stated.
Software & equipment
POS subscriptions, extra locations or users, add-on apps, hardware purchase or rental, connectivity, accessories, and installation. A lower processing estimate may come with a different software commitment.
Terms & promotions
Initial term, automatic renewal, notice periods, cancellation, equipment return, and promotion expiry. If services are bundled, ask what each costs when the offer ends or the processing agreement changes.
Settlement & support
Deposit timing, cut-off times, reserve or hold conditions, chargeback support, and escalation channels. These affect daily operations even when they are not part of the headline percentage.