Tax related Query


I have a query related to TAX in AX 2009, my client is based in Japan and the VAT there is changing from 5% to 8% on the 1st April.

I know that in the values tab under the Sales tax codes I can define the From date and To date for the Sales tax code but I need to know the impact of suddenly changing the Tax value for all open transactions.

Transactions created before 1st April, and posted after that.

Please help.

Tax is calculated based on the transaction date and picks the rate from master. There will be no change in the open Transactions.

If POs are created before 1st April and gets posted after that, AX will take rate applicable on the date of transactions.