VAT Rounding Up

We have noticed that VAT is rounding up more than 1p



eg: 5 x £0.69 = £3.45 Tax shows as £0.60



However at 20% UK VAT it should be £0.575, although I can understand if it showed £0.58, but rounding it up 2.5p seems a little exessive.



Does anyone know why and how we can rectify this?



Thanks

This has been resolved.



Change Tax Calculation from Unit Price to Subtotal.