Rounding Issues?

This is my second Hikashop Website and in the past there were some rounding issues.

Using the latest Business Version 1.6

I have been reading another topic about rounding issues here:
www.hikashop.com/en/forum/2-general-talk...de-plugin.html#63782

Can your team please be more specific because I see rounding problems after I have added a new product.
Applied the TAX RATE.
Saved the product.
Go back to the product and see that the price with TAX is now below 10 EUR (EUR 9.9999966).

Product Price with TAX EUR 10
TAX 21% = 2,10

In the cart I see a TAX amount of EUR 1,74

Testing it right here:
www.1968dewinkel.nl/cadeaubonnen

That's normal.

The tax is 21% right ?

So you apply the tax on the price which is 8.26446 and 21% of 8.26446 is 1.74 after you round it. and definitely not 2.1
Then, you sum the price without taxes and the tax: 8.26 + 1.74 and you get 10.

If you wanted a tax of 2.1, the price without taxes should be 10 and the final price would be 12.1