Let's say that a VAT tax code for a country was changed from 15% to 10%. What would be the best practice for this? Do I just change the existing 15% in NS to 10% or create a new tax code of 10%?

we create a separate code (which has the primary code). We also have the old code in case we get any invoices at the old rate. But it feels really clunky (shouldn't there be multiple rates based on effective date?). Would be interested to know what best practice looks like too

yeah that's what I did cos it was urgent

out of interest, which country has changed its vat rate? Want to make sure i haven't missed one of ours...

ever look at the tax code record? they have dates dont they?

yeah you can put an effective from and an effective to. But it would be better (for me, at least) if you could keep the same tax code but have the rate vary over time. Fundamentally it's very rare that a new tax is introduced (e.g. Malaysia SST), it's normally just the rate changes from a particular date (e.g. RSA VAT change, UK VAT changes, etc etc). For the end user, they just should be picking Standard VAT rather than a choice of two standard VATs. Just my 2 cents

The VAT tax code for Bangladesh was changed from 15% to 10% @Jon Kears Having a effective to and from date seems like a good idea hmm