How to deal with the rounding of figures in Manager when calculating Tax (in The Netherlands: 6% BTW and 21% BTW)?

I have a receipt where the figures are as followed:

`Total figure (incl Tax) € 15,92`

Breakdown into 6% BTW and 21% BTW (as stated on the receipt):

```
BTW-code Revenue BTW | Total incl Tax
6% 11,25 0,67 | 11,92
21% 3,31 0,69 | 4,00
```

When I put this receipt into Manager and use the ‘breakdown figures’ and do not use ‘Amounts are tax inclusive’ in Manager, the calculation goes wrong:

for the figure with 6% BTW Manager calculates 0,68

for the figure with 21% BTW manager calculates 0,70

and for the Total (included Tax): € 15,94

When I calculate these figures myself with my calculater it shows:

for the figure with 6% BTW it calulates 0,675, rounded into 2 figures after the comma: 0,68

for the figure with 21% BTW it calculates 0,6951, rounded into 2 figures after the comma: 0,70

So the rounding in Manager is correct.

When I start with putting the receipt into Manager while using the Tax-included figures (11,92 for BTW 6% and 4,00 for BTW 21%) the calculation in Manager shows the same figures as in the original receipt: it shows 0,67 for 6% BTW and 0,69 for 21% BTW.

What is the best way to do this in Manager? I prefer using the figures as stated on the recept as they are already split into 6% BTW and 21% BTW. Otherwise I first have to add the 2 figures excl BTW and BTW into an included BTW figure, use this in Manager, where Manager again calculated the correct Taxes.