Duties and Taxes Estimate Calculator
Enter customs value, import duty rate and VAT/GST rate to estimate total import taxes. VAT or GST is calculated on the duty-inclusive base (customs value + duty). Shows step-by-step calculation and effective tax rate. Local exemptions and tax bases vary by country.
Estimate import duty and VAT/GST from customs value. VAT or GST is typically calculated on the duty-inclusive value (customs value + duty). Enter 0 for either rate if not applicable to your shipment.
CIF or FOB depending on importing country
From HS code tariff schedule
Enter 0 if not applicable or reclaimable
Formula
Duty = Customs Value × Duty Rate ÷ 100 | VAT/GST = (Customs Value + Duty) × Tax Rate ÷ 100
In most countries, VAT or GST on imported goods is applied to the duty-inclusive value — meaning tax is calculated on the customs value plus any import duty. This is sometimes called a 'tax on a tax' effect and means the combined tax burden is higher than simply adding the duty rate and VAT rate percentages. The effective tax rate shows total taxes as a percentage of the original customs value.
Worked Example
Import to UK: Customs value USD 10,000 · Duty rate 5% · UK VAT 20%:
Duty = USD 10,000 × 5% = USD 500
VAT base = USD 10,000 + USD 500 = USD 10,500
VAT = USD 10,500 × 20% = USD 2,100
Total taxes = USD 500 + USD 2,100 = USD 2,600
Effective tax rate = USD 2,600 ÷ USD 10,000 = 26.0%
Note that the effective rate of 26% is higher than simply adding 5% + 20% = 25%. The difference arises because VAT is applied on the duty-inclusive base. For VAT-registered importers who reclaim VAT, the effective cash cost may be only the duty (5%) plus the time-cost of the VAT cash flow.
FAQ
Frequently Asked Questions
Use this in your workflow
Calculate CIF customs value with the Customs Value Calculator, compute duty and VAT here, then feed total import taxes into the Landed Cost per Unit Calculator. Browse all Online Business Calculators.
When to use this calculator
- →Budgeting total import tax exposure (duty + VAT) before placing an import order
- →Understanding why the combined effective tax rate exceeds duty rate plus VAT rate
- →Comparing import tax exposure under different duty rates (e.g. MFN vs FTA preferential rates)
- →Briefing finance on total import cash flow requirements including VAT timing