Charging a sale

Yammbo Team
•
October 14, 2026
•
6 min read

When the order is ready, tap Charge with the total (for example, “Charge C$250”). The payment screen opens, where you record how the customer pays.

You need an open shift

You can’t charge without a shift. If there isn’t one, the register says “Open a shift first to be able to charge.” See Shifts and cash drawer.

The payment screen

  • Total due: what the customer must pay.
  • Remaining: what is still not covered.
  • Change: the change you must give back.
  • Add payment and Remove: add or delete payments in the list. Until you add one you’ll see “No payments added yet.”
  • Confirm: only enabled once the bill is fully covered.

When you tap Charge, anything not yet sent to the kitchen is sent automatically.

Taking cash

  1. Choose cash and tap a quick button: the exact amount or one of the next banknotes (up to 4 buttons). The payment is added right away.
  2. If the customer gives a different amount, type it in Other amount received (currency) and tap Add payment.
  3. The screen shows the Change. Give it back to the customer.
  4. Tap Confirm.

Change is always calculated in the base currency and is only given for cash payments.

Cash in another currency

If you accept a second currency (for example US$), there is a cash button for each currency. Type the Amount received (currency), tap Add payment and the register shows “Equals (name) at the rate of (name)”. Other currencies are only accepted as cash.

Currencies are set in Settings > Sales and taxes > Currency: Base currency and Other currencies you accept (up to 3). If your register is linked to food.yammbo.com, the second currency and its rate are defined in the web dashboard.

Cash rounding

In Settings > Sales and taxes > Currency you can choose Cash rounding: no rounding, or rounding to 0.50, 1 or 5 units of the base currency. It only applies when the payment is in cash.

Taking a card payment

  1. Open the card tab.
  2. Type the Amount (empty is what is left). If you leave it empty, it takes everything that is remaining.
  3. Optionally, enter the Authorization number (optional) from the card terminal.
  4. Tap Add payment, then Confirm.

Taking a bank transfer

  1. Open the transfer tab.
  2. Type the amount and the Reference or receipt number (up to 40 characters). It is required if that method has the Ask for a reference option turned on.
  3. If you set up your bank details, the Transfer details block appears so the customer can see them.
  4. Tap Add payment, then Confirm.

Split or partial payments

You can add several payments to the same bill: for example, C$100 in cash and the rest by card.

  1. Add the first payment with Add payment.
  2. Check how much is Remaining.
  3. Add another payment until the bill is covered.
  4. Tap Confirm.

Card and transfer payments can’t be more than what is remaining. Only cash can be higher, and the difference is returned as change.

Your own payment methods

In Settings > Payment methods you decide how you get paid:

  • Accept cash: turns cash on or off.
  • Add method: creates a method of type Card or electronic payment or Transfer or deposit. Each has a Name, Ask for a reference and Active, and you can reorder them with Move up and Move down.
  • You can have up to 10 cards and 10 bank accounts.
  • A transfer method includes bank, account holder, account number (4 to 34 digits), account currency and instructions for the customer (optional).
  • At least one way of charging must stay on: Leave at least one way of charging active.
  • Each method needs its own name: “Every payment method you add needs a name.” and “Two payment methods have the same name.”

If your register is linked, payment methods are shared with food.yammbo.com in both directions. See The register and the web dashboard.

After charging: the receipt

When done, you see Sale paid with the receipt number and the Change. From there you can give the receipt to the customer:

  • Print: prints on the receipt printer.
  • WhatsApp: asks for the Customer phone and opens WhatsApp with the message.
  • Text message: sends it by SMS to the customer’s phone.
  • Email: asks for the Customer email. With the register linked, the server sends the email; if there is no internet, it waits in a queue and is discarded after 24 hours. The register shows Sending the receipt to (name), Receipt sent to (name) or The receipt to (name) could not be sent: (name), with Open mail app and Discard.
  • Show receipt QR (only with the register linked): the customer scans it and sees their receipt on their phone. It reads “Scan to see your receipt. Available for 15 days.”

When you send the receipt by WhatsApp, text message or share, a «Ver recibo: (link)» line is added. If the link couldn’t be created, the receipt goes without it and the register tells you (Sent without the receipt link. (name)).

You can tick Save as customer to store the phone or email. To start another sale, tap New sale; at a table, tap Continue.

To reprint a receipt later, use the sales history. See Selling.

Common errors

MessageWhat it means and what to do
”Open a shift first to be able to charge.”No shift is open on this tablet. Open one in the Shift section.
”There is still money left to collect.”The payments don’t cover the total. Add another payment.
”Non-cash payments cannot exceed what is left to pay.”Lower the card or transfer amount to what is remaining.
”This payment method needs a reference.”Type the reference or receipt number.
”One of the payments uses a method that is no longer active. Remove it and add it with another method.”Remove that payment and add it again with an active method.
”The phone number is not valid. Enter 8 digits or the full number with the country code.”Fix the number (8 digits, or the full number with country code).
”The email is not valid.”Check that the email is typed correctly.
”There is no app to send the receipt that way.”The tablet doesn’t have the needed app installed (for example WhatsApp). Use another channel.
”This tab was paid (or voided) on another device.”Another tablet already closed the bill. The register releases it; check the sales history.

Next step

Last updated: October 14, 2026

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