How Much Tax Do the Self-Employed Pay in 2026/27? | UK Tax Guide

Operating as a self-employed individual in the UK subjects your trading profits to two primary levies: Income Tax and National Insurance Contributions (NICs). For the 2026/27 tax year, the government has maintained the freeze on key tax thresholds while implementing significant structural reductions to the National Insurance burden and increasing dividend taxes for those who operate via a limited company.

Here is an exhaustive breakdown of how much tax the self-employed pay, including rates, thresholds, and the new digital reporting obligations taking effect this year.

Income Tax Rates and Thresholds (2026/27)

Self-employed individuals pay income tax on their net trading profits. The government calculates this liability by applying the statutory main rates of income tax to your earnings after deducting your Personal Allowance.

For the 2026/27 tax year, the government has frozen the Personal Allowance at £12,570 and the Basic Rate Limit at £37,700.  This freeze lasts until April 2028, meaning the Higher Rate Threshold (HRT) remains statically fixed at £50,270.

Under section 2 of the Finance Act 2026, the main rates of income tax for the 2026/27 tax year are:

“(a) the basic rate is 20%, (b) the higher rate is 40%, and (c) the additional rate is 45%.”

Because the thresholds are frozen, any nominal increase in your profits pushes more of your income into the 40% higher rate band—a phenomenon known as fiscal drag.

Self-Employed National Insurance Contributions

Historically, the self-employed paid two types of National Insurance: a flat-rate Class 2 and a profit-based Class 4. Recent legislative changes have drastically altered this landscape for 2026/27.

Class 4 NICs (Profit-Based)

You pay Class 4 NICs on profits that exceed the Lower Profits Limit (LPL), which remains aligned with the Personal Allowance at £12,570.  The Upper Profits Limit (UPL) remains aligned with the Higher Rate Threshold at £50,270.

The rates for Class 4 NICs have been structurally reduced. The calculation requires two steps:

1. Main Rate: You pay 6% on profits between the LPL (£12,570) and the UPL (£50,270).
2. Additional Rate: You pay 2% on all profits exceeding the UPL (£50,270).

Class 2 NICs (Flat-Rate)

The government has abolished the mandatory liability to pay the weekly Class 2 flat rate for self-employed individuals with profits above £12,570.

If your profits fall below the Small Profits Threshold, you are not required to pay Class 2 NICs, but you retain the right to pay them voluntarily to protect your access to contributory benefits, including the State Pension.

Example Calculation for a Sole Trader

If you generate £60,000 in net taxable trading profits in the 2026/27 tax year, your total liability calculation operates as follows:

Income Tax:

• £0 to £12,570 (Personal Allowance): £0
• £12,570 to £50,270 (£37,700 @ 20%): £7,540
• £50,270 to £60,000 (£9,730 @ 40%): £3,892
• Total Income Tax: £11,432

Class 4 NICs:

• £12,570 to £50,270 (£37,700 @ 6%): £2,262
• £50,270 to £60,000 (£9,730 @ 2%): £194.60
• Total Class 4 NICs: £2,456.60

Class 2 NICs:

• Abolished for profits at this level: £0

Net Outcome: On £60,000 of profit, you pay £13,888.60 to HMRC, leaving you with £46,111.40.

The New MTD ITSA Compliance Burden

For the 2026/27 tax year, earning over £50,000 triggers a severe new administrative requirement.

From April 2026, Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) mandates that sole traders and landlords with qualifying income over £50,000 must use compatible digital software to maintain records and submit quarterly updates to HMRC.  This replaces the single annual tax return system for these higher earners, enforcing stricter, more frequent reporting deadlines. The threshold drops to £30,000 in April 2027, and £20,000 in April 2028.

Limited Company Directors (Dividend Tax)

Many business owners describe themselves as “self-employed” but actually operate through a limited company. If you trade via a company, you pay Corporation Tax on your profits rather than direct income tax.

For the financial year 2026, the standard small profits rate of Corporation Tax is 19% (for profits up to £50,000), while the main rate remains 25% (for profits over £250,000).

When you extract those profits as dividends, you face increased personal tax rates. For the 2026/27 tax year, the government has hiked the dividend tax rates:

• Dividend Ordinary Rate: 10.75%
• Dividend Upper Rate: 35.75%
• Dividend Additional Rate: 39.35%

This means limited company contractors must run a careful comparative calculation against the sole trader Income Tax/Class 4 NICs rates to determine the most tax-efficient trading vehicle.

Summary Table: 2026/27 Self-Employed Tax Rates & Thresholds

For completeness, self-employed taxpayers must ensure they accurately deduct all allowable business expenses before arriving at their taxable profit figure. Unlike employees, whose ability to claim home-working relief is heavily restricted or abolished, self-employed individuals can continue to claim an apportioned percentage of their home running costs (heating, lighting, broadband) to legitimately reduce both their Income Tax and Class 4 NIC liabilities.

Next steps: Advisors should review the client’s projected 2026/27 turnover immediately to determine if they breach the £50,000 MTD for ITSA threshold, ensuring compatible software is implemented well before the first quarterly filing deadline in August 2026.