Selling Online or Freelancing? You May Need to Declare Your Income

Selling products online, freelancing, or creating digital products has become incredibly common. Many people start these activities as side projects, but once money starts coming in, tax obligations can follow.

If you are making more than £1,000 per year from activities such as selling online, freelancing, reselling items, or offering services, HMRC may expect that income to be declared.

This applies whether the income comes from a full business, a side hustle, or occasional sales.

The £1,000 Trading Allowance

In the UK, there is a trading allowance of £1,000. This means you can earn up to £1,000 per year from self-employed activities without needing to pay tax on it.

However, once your income goes above this threshold, you may need to register for Self Assessment and report the income to HMRC.

It is important to remember that this threshold applies to total income from trading activities, not profit.

Online Platforms Are Now Sharing Data

One of the biggest changes in recent years is how much data HMRC can access.

Many online platforms now have data sharing obligations. This means that information about seller income may be reported directly to tax authorities.

Platforms that may share data include:

• Etsy

• eBay

• Amazon

• Fiverr

• Upwork

• Stripe

• Other online marketplaces and payment processors

Because of this, income earned through these platforms is becoming much more visible.

If you are earning money and not declaring it, it may not be as hidden as you think.

You Only Pay Tax on Profit

The good news is that tax is not based on revenue alone. It is based on profit.

Profit is what remains after allowable business expenses are deducted from your income.

Common expenses for online sellers and freelancers may include:

• Platform fees and commissions

• Payment processing fees

• Packaging and postage

• Software subscriptions

• Equipment used for the business

• Marketing costs

Tracking these expenses properly can make a significant difference to how much tax you actually pay.

When You May Need to Register for Self Assessment

If your income from trading activities exceeds £1,000 in a tax year, you may need to register for Self Assessment and file a tax return.

This allows you to report your income, deduct expenses, and calculate the tax owed on your profit.

Many people delay dealing with this because they are unsure how it works. Unfortunately, ignoring it can lead to penalties later on.

The Importance of Staying Compliant

Side hustles and online businesses are now firmly on HMRC’s radar. With increased access to digital platform data, it is becoming easier for them to identify undeclared income.

Staying compliant early avoids unnecessary stress, penalties, and interest later.

It also allows you to treat your activity like a proper business and keep clear records from the start.

The Bottom Line

If you are earning more than £1,000 per year from selling online, freelancing, or digital products, it is worth checking whether you need to declare the income.

The earlier you understand your obligations, the easier it is to stay compliant and avoid problems down the line.

If you are unsure whether you have crossed the £1,000 threshold or whether you need to register for Self Assessment, it is better to ask the question now rather than deal with penalties later.

Meet Lewis

Lewis is a professional accountant and founder of Rhombus Accounting. He regularly shares his knowledge and best advice here on his blog and on other channels such as LinkedIn.

Book a call today to learn more about what Lewis and Rhombus Accounting can do for you.