Author: Glenn

From income tax to VAT, HMRC has specific time limits for issuing tax assessments. Depending on the circumstances—whether it’s standard, careless, offshore, or deliberate behaviour—these limits can stretch from 4 to 20 years.

HMRC’s time limits apply in different ways to various taxes, including income tax, capital gains tax, corporation tax, VAT, insurance premium tax, aggregates levy, climate change levy, landfill tax, inheritance tax, stamp duty land tax, stamp duty reserve tax, petroleum revenue tax, and excise duty.

There are four time limits within which assessments can be issued. These are:

• 4 years from the end of the relevant tax period
• 6 years (careless) from the end of the relevant tax period
• 12 years (offshore) from the end of the relevant tax period
• 20 years (deliberate) from the end of the relevant tax period

The 4-year time limit is the standard time limit for all taxes.

The 6-year time limit applies when taxes have been lost due to the careless behaviour of the taxpayer, or another person acting on their behalf.

The 12-year time limit applies when taxes have been lost due to an offshore matter or offshore transfer. This also applies if reasonable care was taken, or the behaviour is considered careless by the taxpayer or another person acting on their behalf.

Lastly, the 20-year time limit applies when taxes have been lost due to the deliberate behaviour of the taxpayer or another person acting on their behalf, or if the taxpayer has failed to comply with specific historic obligations for periods ending before 1 April 2010.

With a £90,000 VAT registration threshold, many UK businesses might wonder whether to register voluntarily. Understanding how to balance output and input VAT can help optimise cash flow and avoid costly mistakes with HMRC.

The current VAT registration threshold for businesses is £90,000 in taxable turnover. However, businesses below this threshold can still opt for voluntary VAT registration.

VAT registered businesses charge VAT on their sales, known as output VAT, while also paying VAT on most of their purchases, referred to as input VAT.

The output VAT is collected from customers on behalf of HMRC and must be regularly paid over to HMRC. However, businesses can deduct the input VAT on most (but potentially not all) goods and services purchased from their output VAT liability to HMRC.

This calculation usually results in a VAT payment that is due to HMRC. If the input VAT exceeds the output VAT, HMRC will owe you a refund of overpaid VAT.

HMRC’s guidance states that the following must be included on your VAT return:

• your total sales and purchases
• the amount of VAT you owe
• the amount of VAT you can reclaim
• the amount of VAT you’re owed from HMRC (if you’re reclaiming VAT on business expenses)

It's important to include VAT on the full value of your sales, even if:

• You receive goods or services instead of money (e.g., part-exchange)
• You have not charged VAT to the customer (the full price charged is treated as including VAT).

Please note, you cannot charge VAT to your customers or claim back the input tax you have paid to suppliers unless you have formally registered for VAT.

Maximise your tax relief with the Structures and Buildings Allowances (SBA). If you have invested in new or renovated commercial structures, you could claim 3% relief annually—saving you money for the next 33 years!

The Structures and Buildings Allowances (SBA) allows for tax relief on qualifying capital expenditure on new non-residential, commercial structures and buildings. The relief applies to the qualifying costs of building and renovating commercial structures.

The relief was introduced in October 2018 at an annual capital allowance rate of 2% on a straight-line basis. The annual rate was increased to 3% from April 2020, and the corresponding period reduced to 33 and one third years. The rate has remained fixed since then and will remain at the same rate for the 2025-26 tax year.

HMRC’s guidance sets out the process for making a claim. In order to make a valid claim a written allowance statement is required. 

The allowance statement must include:

• information to identify the structure, such as address and description;
• the date of the earliest written contract for construction;
• the total qualifying costs; and
• the date that you started using the structure for a non-residential activity.

The claimant must also meet the necessary requirements in respect of the building itself and the chargeable period for the claim. 

The start date of the claim is the later of the following two dates:

• the date when you started using the structure for a qualifying activity; and
• the date that you’re due to pay for the structure or construction.

No relief is available where parts of the structure qualify for other allowances, such as plant & machinery allowances.

When a trade ends, income doesn’t always stop. Post-cessation receipts can still arise, and knowing how they are taxed is crucial. Whether it’s Income Tax or Corporation Tax, the recipient—not necessarily the original trader—bears the responsibility.

There are special rules for the taxation of post-cessation receipts after a trade has ceased. The legislation clearly states that the person who receives or is entitled to the post-cessation receipt is the person who is subject to Income Tax or Corporation Tax on the income. This person does not necessarily have to be the same one who was originally carrying on the trade.

The only factor to consider when determining whether these rules apply is whether the income qualifies as a post-cessation receipt. If it does, then, unless a territorial exclusion applies, the income is taxable for the recipient.

The legislation provides for the taxation of certain receipts arising from the carrying on of a trade which:

• are received after a person permanently ceases to carry on a trade;
• arise from the carrying on of the trade before the cessation; and
• are not otherwise subject to tax.

In addition to income meeting these conditions, the legislation specifically identifies other types of income treated as post-cessation receipts. There are also certain receipts, such as payments for the transfer of trading stock, which are specifically excluded from being classified as post-cessation receipts.

The UK's shift to the Foreign Income and Gains (FIG) regime from April 2025 changes how foreign income is taxed. If you are a UK resident, get ready to possibly pay UK Income Tax on all foreign earnings—no more non-dom remittance basis.

UK Income Tax is generally payable on taxable income received by individuals including earnings from employment, earnings from self-employment, pensions income, interest on most savings, dividend income, rental income and trust income. The tax rules for foreign income can be very complex.

However, as a general rule if you are resident in the UK you need to pay UK Income Tax on your foreign income, such as:

• wages if you work abroad
• foreign investments and savings interest
• rental income on overseas property
• income from pensions held overseas

Foreign income is defined as any income from outside England, Scotland, Wales and Northern Ireland. The Channel Islands and the Isle of Man are classed as foreign.

If you are not UK resident, you do not generally have to pay UK tax on your foreign income. There are special rules if you work both in the UK and abroad.

The remittance basis rules which allowed non-UK domiciled individuals (often referred to as non-doms) to be taxed only on UK income and gains, is being abolished. From 6 April 2025, the concept of domicile as a relevant connecting factor in the UK tax system has been replaced by a new residence-based regime known as the Foreign Income and Gains (FIG) regime.