01
Loan Calculator
Works out the monthly payment, total interest and full repayment schedule for any loan from…
Customs Duty Calculator
Estimates duty, import tax and total landed cost on an imported item, including the de minimis threshold and handling fees.
Calculators
Nothing uploaded
No sign-up
Free, unlimited
Enter your figures and press Calculate.
In short
Customs Duty Calculator is a free online tool on inputtesthub.com that estimates duty, import tax and total landed cost on an imported item, including the de minimis threshold and handling fees. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Customs Duty Calculator
- Enter your figures in the input fields.
- The result updates as you type, together with the full working.
- Check the breakdown table to see exactly how the number was reached.
About the Customs Duty Calculator
The Customs Duty Calculator estimates duty, import tax and total landed cost on an imported item, including the de minimis threshold and handling fees. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Budgeting for an overseas order before buying.
- Understanding an unexpected customs bill.
- Checking whether an order stays under a de minimis threshold.
Details
| Customs value | Usually includes shipping |
|---|---|
| Tax base | Customs value + duty |
| De minimis | Below it, nothing is charged |
| Handling fee | Charged by the carrier, separate |
The maths behind it
This tool uses Customs value = goods + shipping + insurance. Duty = customs value × duty rate. Import tax is charged on customs value plus duty, not on the goods alone. Every intermediate value is shown on screen, so the result can be checked by hand.
Import tax is charged on the customs value plus the duty, so the two stack rather than adding. Shipping usually counts toward the customs value, which is why a cheap item with expensive postage can be charged more than the item cost. Rates and thresholds differ by country and commodity code — the destination customs authority is the only authority on what is actually owed.
Frequently asked questions
Is there a limit on how often I can use the Customs Duty Calculator?
It is free, with no account, no trial and no daily cap. Every calculators tool on inputtesthub.com works the same way: open the page and use it.
Is what I paste into the Customs Duty Calculator stored?
No. The Customs Duty Calculator runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
What is the equation behind the Customs Duty Calculator?
It uses Customs value = goods + shipping + insurance. Duty = customs value × duty rate. Import tax is charged on customs value plus duty, not on the goods alone. The full working is printed under the result, so you can follow every step rather than trusting a black box.
What is the Customs Duty Calculator used for?
The most common reasons people reach for it: budgeting for an overseas order before buying. Understanding an unexpected customs bill. Checking whether an order stays under a de minimis threshold. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Any caveats I should know about?
Import tax is charged on the customs value plus the duty, so the two stack rather than adding. Shipping usually counts toward the customs value, which is why a cheap item with expensive postage can be charged more than the item cost. Rates and thresholds differ by country and commodity code — the destination customs authority is the only authority on what is actually owed.
What are the reference figures here?
Customs value is Usually includes shipping. Tax base is Customs value + duty. De minimis is Below it, nothing is charged. These are printed on the page itself, so you do not have to take them on trust.
How precise is the result?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
Related calculators tools
All 38202
EMI Calculator
Calculates your Equated Monthly Instalment with a full principal-versus-interest breakdown and…
03
Mortgage Calculator
Estimates a full monthly housing payment including principal, interest, property tax…
04
Car Loan Calculator
Calculates a car finance payment from the price, deposit, trade-in, interest rate and term…
05
Personal Loan Calculator
Works out instalments and total cost for an unsecured personal loan, including any processing…
06
Amortization Schedule Calculator
Produces a complete month-by-month table showing how each payment splits between interest and…
07
Compound Interest Calculator
Shows how savings grow with compound interest, including regular contributions and any…
08
Simple Interest Calculator
Calculates simple interest and the final amount from principal, rate and time, without…
09
SIP Calculator
Projects the maturity value of a monthly Systematic Investment Plan, showing invested amount…
10
Lumpsum Investment Calculator
Calculates what a one-off investment grows to at a given annual return over any number of years.