Tip Adjust

Tip adjust updates the tip amount on a transaction that has already been authorized but not yet settled. Use it when the customer adds or changes a tip after the initial payment.

Basic Tip Adjust

iOS:

let response = try await KoardMerchantSDK.shared.tipAdjust(
    transactionId: transactionId,
    tipAmount: 3000            // $30.00 tip
)

Android:

sdk.adjust(
    transactionId = transactionId,
    tipAmount = 3000
)

Note: The iOS SDK method is tipAdjust() while the Android SDK method is adjust().

Surcharge Behavior

When a tip is adjusted on a surcharged transaction, the surcharge is not recalculated. The original surcharge amount remains unchanged. If you need to recalculate the surcharge based on the new total (subtotal + tax + new tip), you should handle that in your capture flow instead.

Parameters

See Also

• Sale — One-step payment
• Preauth — Hold with tip added later
• Capture — Finalize with updated tip