#Are You Overpaying Import Charges? Here’s a Simple Way to Stop.
Recent changes to U.S. tariffs have added volatility to cross-border trade. With shifting import rates and the current temporary 15% blanket tariff now in place, accurately declaring values on shipping documents has never been more important.
The good news? A simple net-focused solution can help UK ecommerce retailers achieve greater cost control and stability during uncertain times.
The Problem: Paying Tax on Tax
Most retailers don’t realise they may be inflating their customs declaration value — and increasing their landed cost — without meaning to.
A common scenario:
Many ecommerce platforms and marketplaces don’t let you separate out the net value of your product when creating customs declarations. Instead, calculated duties and taxes are included in the value that gets passed to your parcel carrier. This means that additional tariffs are then calculated on top. In other words: you pay tax on tax.
That’s frustrating, and expensive – especially if this happens repeatedly across hundreds or thousands of shipments.
A Simple Solution: The Net Value Calculator
To help fix this, SAMOS has built a simple tool designed specifically for UK ecommerce retailers shipping internationally.
The SAMOS Net Value Calculator allows you to exclude import duties, taxes and tariffs before your shipping declaration is submitted when you create a label with us.
It ensures that only the correct net product value is declared. This means:
- You avoid inflated declaration values
- You eliminate unnecessary tariff charges
- You reduce your landed cost per unit
- You protect margin on every international shipment
#How Net Value Calculator Works — A Quick Comparison
Example: UK → USA for an item value of £60.00
| Without Net Value Calculator | With SAMOS Net Value Calculator | |
| Net Item Value in Shop Platform | 60.00 | 60.00 |
| Duty % | 3.2% | 3.2% |
| Tariff % | 15.0% | 15.0% |
| Duty Value | 1.92 | 1.92 |
| Tariff Value | 9.00 | 9.00 |
| SAMOS Net Value Recalculation | None | 18.2% |
| Declared Value | 70.92 | 60.00 |
| Actual Duty and Tariff | 12.91 | 10.92 |
| Saving | 0.00 | 1.99 |
By simply declaring the correct net value, you save £1.99 on one shipment.
If you ship 2,000 parcels annually, that’s nearly £4,000 in savings and recovered margin — without changing suppliers, carriers or pricing.
At scale, small declaration inaccuracies can significantly increase total landed cost.
Why It Matters Now
The current 10% blanket tariff has created additional uncertainty for UK exporters shipping to the United States.
With temporary global import surcharges and shifting duty frameworks, ecommerce businesses must be more precise than ever with customs documentation and incorrect declaration values now carry a bigger financial impact than before.
The Net Value Calculator helps create stability in this unpredictable landscape by ensuring that your product values are declared accurately, regardless of tariff fluctuations. It fills a gap that many ecommerce platforms can’t solve on their own.
Who This Is For
The Net Value Calculator is particularly valuable for:
- UK ecommerce brands shipping to the USA and globally
- Marketplace sellers using DDP shipping services
- High-volume retailers managing cross-border trade
- Businesses affected by current US tariff increases
- Small to mid-sized retailers focused on reducing international shipping costs
Compliance Reminder: HS Codes and Import Responsibilities
It’s important to note that retailers remain responsible for:
- Selecting the correct HS codes
- Applying accurate duty rates
- Checking the latest tariff updates
The Net Value Calculator ensures correct value declaration — but it does not replace your compliance obligations.
For up-to-date US tariff rates, retailers should consult the Harmonized tariff Schedule (HTS) and apply any applicable blanket tariffs.
A Simple Step Toward Profitability
If you’re looking for a straightforward way to:
- Reduce US import duties
- Avoid paying tax on tax
- Improve landed cost accuracy
- Protect ecommerce margins
- Create stability in your international shipping operation
The Net Value Calculator is worth exploring.
It’s easy to use, integrates with your existing platform, and delivers savings without complexity.
Shipping doesn’t have to be complicated — and it shouldn’t cost more than it needs to.
#Frequently Asked Questions About Overpaying Import Duties
Why am I paying tax on tax when shipping to the USA?
Many ecommerce platforms include duty and tax amounts in the declared shipment value. When US tariffs are calculated on that inflated figure, you effectively pay tax on tax.
How can UK retailers reduce US and global import duties?
Retailers can reduce unnecessary import charges by ensuring that only the true net product value is declared on customs documentation and excluding calculated duties from the declaration value.
How do US tariffs affect ecommerce profit margins?
When tariffs are calculated on inflated declaration values, your landed cost increases. Over time, this reduces profit per unit and impacts overall ecommerce profitability.
Does the Net Value Calculator replace HS code compliance?
No. Retailers remain responsible for selecting the correct HS codes and applying appropriate duty rates. The tool ensures accurate value declaration only.
Is it Time to Stop Overpaying Import Duties?
Small declaration errors add up quickly in cross-border ecommerce.
If you’re shipping from the UK to the USA or any other international destination, ensuring the correct net value is declared could immediately reduce unnecessary import charges.
Speak to a SAMOS international shipping specialist today and find out how much you could save per shipment.
View our shipping and return rates and start shipping globally with confidence.
SAMOS – Turn global shipping headaches into growth. It all starts here.
