Which is addressed in the link I posted previously:
"17.5.2 Calculation based on tax per unit or per article
If you want to work out the VAT per unit or per article (for example, for use in price lists), you must work out the amounts in one of the following ways:
4 digits after the decimal point and then round to 3 digits - for example, if the VAT is £0.0024, it should be rounded to £0.002 (0.2p)
the nearest 1p or 0.5p - if you decide to do this, you must not round the VAT down to ‘nil’ on any unit or article that is liable at the standard or reduced rate, for example, if the VAT is £0.0024 it should be rounded to £0.005 (0.5p)"
No experience - what's yours?
The entire section is in reference to how to calculate the VAT rounding on an invoice, i.e. the document created at each transaction (the sale being made per person). Systems have to deal with rounding at the point of sale, not just at the end of the VAT period (although they may also have to deal with rounding at this point due to rounding performed earlier in the period).
I'm a Chartered Accountant, previously an auditor who had to audit sales of companies (and the associated VAT accounting) and now a specialist corporate tax adviser, although VAT isn't my specialism.
Edit: I have about 2 years of audit experience and the associated finance systems (including retail and B2B) and I think 5 years now of tax. I'm losing track.
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