It depends on risk and alternatives. Many businesses look for a positive ROI and compare options on ROI plus payback time.

What if my ROI is negative?

A negative ROI means the return was less than the investment. The calculator will show a negative profit and ROI%.

Does ROI include time?

Basic ROI doesn’t account for time. For time-based growth, consider CAGR or compare ROI across the same time period.

Import VAT Calculator (Estimate)

Estimate import charges: calculate duty and VAT on imported goods from the item value, shipping and duty rate. Helpful for ecommerce costing.

Use this calculator when you need a fast, reliable answer without opening a spreadsheet. Enter your figures below and press Calculate. PercentNinja shows the key outputs you typically need for pricing decisions, VAT checks, ecommerce payouts or ad reporting.

When to use this

Building VAT-inclusive prices from a net figure
Reverse-calculating net and VAT from a receipt or invoice
Forecasting VAT due for a period and spotting surprises early

Calculate

Results are estimates for informational purposes only and may be rounded.

Tip: Press Enter to calculate.

Worked examples

Example 1

Question: Goods £200, shipping £20, duty 3%, VAT 20%.

Duty = (200+20)×0.03 = £6.60
VAT base = 200+20+6.60 = £226.60
VAT = 226.60×0.20 = £45.32
Total charges = 6.60+45.32 = £51.92

Example 2

Question: Goods £80, shipping £10, duty 0%, VAT 20%.

Duty = £0
VAT base = £90
VAT = £18
Total charges = £18

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