Cash Register POS and E-Archive Invoice

In most retail businesses, the day ends with the Z-report generated by the cash register. If payments are made by card, the POS and cash register are combined in a single device.

The problem starts when a customer says, "I want an invoice."

Receipt or invoice?

A retail sales receipt is sufficient for sales made to final consumers that remain below a certain limit.

An invoice is required in three cases: if the buyer is a taxpayer, if the amount exceeds the statutory limit, or if the customer requests one.

Customer request is key here: regardless of the amount, you must issue an invoice to any customer who asks for one.

Amount thresholds are updated every year; we broke down these thresholds in our article on invoice issuance periods and limits.

What is a cash register information slip?

For a sale where an invoice is issued, a standard sales receipt does not come out of the cash register. Instead, an information slip is generated.

An information slip means, "this collection went through this device, but its document was separately issued as an invoice." This way, the same sale is not counted twice as revenue on both the receipt and the invoice.

When this distinction isn't made, the resulting problem is serious: your end-of-day Z-report clashes with your total invoices, making your turnover look higher than it actually is. This means paying extra VAT and income tax.

This is the most crucial detail your checkout team needs to know.

End-of-day recording

A healthy end-of-day workflow in pre-accounting is set up as follows:

1. The Z-report total is recorded as revenue from sales closed with a receipt.

2. Sales with issued invoices are already recorded separately; they are not added again.

3. Collections are separated by payment type: cash to the cash drawer, card to the POS/bank account.

For card collections, the amount deposited into the account will be lower due to commissions; we covered this in the POS reconciliation article.

For account setup, you can check out the bank and cash management guide.

On the inventory side

If sales passing through the cash register do not reflect in pre-accounting on a product basis, your inventory report does not reflect reality.

This is a common gap in retail: the sales amount is known, but it is unknown how many units of which product were sold. Consequently, it's impossible to see which products are actually profitable.

We covered this topic in our inventory tracking errors article.

Frequently asked questions

Is a cash register POS mandatory?

Using a cash register is essential for taxpayers engaging in retail sales and accepting card payments. Confirm the rules for your specific business sector with your financial advisor.

Can a customer who received a receipt request an invoice later?

Requests can be made within a certain timeframe. In this case, the receipt is returned and an invoice is issued; clarify the procedure with your financial advisor.

Should I issue the e-archive invoice from the device?

Invoices can also be issued through pre-accounting; only the information slip is generated on the device. Whichever method you choose, make sure to avoid duplicate entries.

I own a restaurant, is an e-receipt (e-adisyon) also required?

There is a separate practice for food and beverage businesses; check out the e-adisyon regulations article.

The distinction between receipts and invoices is a simple rule, but when misapplied, it directly leads to paying excess taxes. Ensuring your checkout team knows this is the easiest way to save money.

Open a free account on Qolay.App to keep your end-of-day sales and collection records in order.