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The question of rounding, particularly in accounting, is a question which sometimes remains without a solution other than conventional.
Gestan presents the rounding of monetary amounts, but stores the entire figures.
For example, an amount of 137.3083333333333 will be displayed as 137.31, if you handle amounts with two decimal places.
It is possible to manage the prices of your product catalog either from an excluding tax base, or from an inclusive tax base, via the general settings.
Often, companies working in BtoB will prefer to use a tax-exclusive basis, while BtoC companies will prefer an tax-inclusive basis.
Let's take a real-life example to understand the difference.
Or a company (hello Mylène ) which sells parts at 6.92 excluding VAT and 4% VAT, therefore 7.20 including VAT.
On a sale of 494 pieces, we have:
| Calculation method | PU excl. tax | PU incl. tax | Qty | excl. tax | VAT | % VAT | excl. tax rounded | incl. tax rounded | VAT rounded | |
|---|---|---|---|---|---|---|---|---|---|---|
| PU including tax derived from the price excluding tax | 6.92 | 7.1968 | 494 | 3418.48 | 3555.2192 | 136.7392 | 4 | 3418.48 | 3555.22 | 136.74 |
| PU excluding tax derived from price including tax | 6.9230769231 | 7.2 | 494 | 3420 | 3556.8 | 136.8 | 4 | 3420.00 | 3556.80 | 136.80 |
| PU excluding VAT and including VAT at their rounded value | 6.92 | 7.2 | 494 | 3418.48 | 3556.8 | 138.32 | 4.0462427746 | 3418.48 | 3556.80 | 138.32 |
Depending on your settings:
It is recommended to always use the same practice, so that your documents are consistent.
For example, a seller who sells bottles at 16.97 with VAT of 5.5%. A good friend places an order for 5 bottles, and he gives her a very friendly discount of 39.30%.
This gives us:
| Amount | |
|---|---|
| HT | 51.503950 |
| VAT | 2.832715 |
| tax included | 54.336665 |
| Excl. VAT | 54.336665 |
If we round these amounts to two decimal places, we have:
| Amount | |
|---|---|
| HT | 51.50 |
| VAT | 2.83 |
| tax included | 54.34 |
| Excl. VAT | 54.33 |
There is therefore a difference of 1 cent since the results are presented with only two decimal places.
In this case, Gestan will force the VAT amount to be the difference between the two amounts, excluding tax and including tax. We will therefore have:
| Amount | |
|---|---|
| HT | 51.50 |
| VAT | 2.84 |
| tax included | 54.34 |
| Excl. VAT | 54.34 |
(Thank you @GaëtanGF for this example)
In certain cases, notably non-homogeneous entries, it is possible to notice a rounding discrepancy on a part.
To adjust it, the easiest way is to re-enter the amounts including VAT or excluding VAT as appropriate, directly in the list of items for the part concerned, as below.
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