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https://help.tallysolutions.com/docs/te9rel66/faqs/8839.htm

Difference in tax amount of actual vs expected

To resolve the exception Difference in tax amount of actual vs expected in VAT triangulation report, drill down to find the vouchers in which duty amount is different from the duty calculated as per the master configurations.

For vouchers where the potential reason is wrong calculation, either the master configuration is wrong or the VAT amount specified in voucher is wrong. The following are the options to rectify these vouchers-

If the ledger configurations need to be changed, change the configurations. This can be to do with the item/party/sales/duty ledger configurations.

If calculation in voucher is wrong and to calculate duty as per ledger configurations, drill down to the voucher alteration mode. To refresh the duty calculation, press Spacebar in duty amount field and accept the voucher. The duty amount will get refreshed as per the ledger configurations.

To exclude any voucher appearing in this list from VAT computation, select the voucher/s by clicking on Space: Select and click on X: Exclude vouchers. The voucher will be excluded from VAT calculation and will be included in Excluded vouchers.

To  make an adjustment voucher for the difference amount, click S: Create adjustment

To link to an existing voucher for the difference amount, click L: Link adjustment.

In vouchers where potential reason is Rounded off , the rounded amount can be edited by drilling down to the voucher alteration.

To ignore the round off error

Select the voucher/s by clicking spacebar

Click C: Ignore round off .

To specify a default round off margin

Click F12:Configure and specify the round off margin. Once this is specified, Tally.ERP 9 will automatically consider this round off margin and ignore round off accordingly.