[GNC] rounding of Invoice vs Accounts Receivable

[gnucash at boeziek.nl]

Hi,
I created a Sales Tax Table entry of 20%.
When I create an Invoice of EUR 109,95 with tax included and select my Tax table, GNUCash calculates EUR 18,33 tax and EUR 91,63 in net revenue.
My Accounts Receivable however will not increase by EUR 109,95 but by 109,96. So 1 cent difference. (the precise amounts are: sales is EUR 91,625 and tax EUR 18,325 and thus both are rounded up)

Is there a way to have the tax rounded down (by 0,5cent) so that the total stays EUR 109,95?
I really prefer to have accounts being 0 at the end of a period, instead of all these loose cents adding up (makes reconciliation harder).

Thanks,
Etienne