There are three main rules for rounding that you should follow:

- “Digits after rounding”. You can find this in “Settings” > “Configuration. This determines how many digits you use on invoice for rounding.
- The main rounding rule is the half even.
- Rounding on invoice: each row is rounded according to the rules that you have set in “Configuration”. These rows are summed up. Therefore, net and gross amounts are based on the rounded amounts not from rounding the total sum in the end.

Because the rounding rules are different in programs and in businesses, then there might be differences that you need to mark somewhere:

- When rounding the net sum, use a invoice row – change the sum on some row or add one row.
- When rounding the VAT, write the right VAT amount in the VAT cell. When the sum is bigger than one euro, you will get an error message, because you should correct the amount on the invoice.
- When you are rounding the total sum, then open the extra information and mark there the rounding sum.

Different options when synchronising data from ERPLY POS:

- If there are no default rules set, then the system will check the differences in sums and will place the differences on the rounding.
**“Synchronize Purchase Invoice Totals”**– synchronize net and gross sums that are meant for accountant.

**“****Match sales invoice net totals – round net total amount not total****”.**Sales invoices – synchronize in a way that the net sum is rounded, not the gross sum.- Based on that, ERPLY Books will check if the net sum on the invoice is the same – deficit and surplus will be placed on the last row on the invoice (It means when you divide invoices between different product groups (or between something else), the differences might cause problems).
- Additional condition: “Calculate rounding from invoice rows”. Because ERPLY might be set up according to retail price (not wholesale price), then there might be differences between invoice net sum and net sum that is calculated from the invoice rows. In order to avoid that, you can activate an option, where net sum isn’t taken from the invoice but is calculated when the transaction is made.