Is VAT rounded up or down?

The VAT is rounded to the nearest penny in Dimensions, so the rounding could be up or down.
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​Example 1 - Net of £11.17 at 20% VAT would calculate to 2.234 (to 3 decimal places), This would round to nearest penny being £2.23 VAT.
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​Example 2 - Net of £11.18 at 20% VAT would calculate to 2.236 (to 3 decimal places), This would round to nearest of penny being £2.24 VAT.