⚡ Loading...
📅 April 2026 — All Changes

IR35 Changes 2026 UK: Everything That Changes on 6 April

Four significant changes hit contractors from 6 April 2026 — but the IR35 rules themselves don't change. Here's what does, what doesn't, and what you should do before the deadline.

🏢
Small co. threshold
£10.2m → £15m turnover
☂️
Umbrella PAYE
Agencies must deduct direct
📈
Tax bands
Frozen — fiscal drag ongoing
💰
Dividend allowance
£500 — unchanged for 2026/27

The Four Changes at a Glance

April 2026 is one of the busiest tax-change dates in recent memory for UK contractors. Here's what's changing, in order of likely impact on your situation.

1

Small Company Threshold Increase

🏢 High Impact

Who it affects: Contractors whose clients are currently classified as medium-sized companies.

Before 6 April 2026
Small = two of three:

Turnover < £10.2m
Balance sheet < £5.1m
Employees < 50

From 6 April 2026
Small = two of three:

Turnover < £15m
Balance sheet < £7.5m
Employees < 50

Around 14,000 companies are expected to reclassify as small. A small company is exempt from the off-payroll working rules — meaning they don't need to issue a Status Determination Statement (SDS) and IR35 status determination reverts to your PSC.

If your current client is likely to reclassify as small, you need to review your contract and working practices now — before April 6 — so you're ready to self-assess.

Full threshold changes guide →
2

Umbrella Company PAYE Rules

☂️ Umbrella Workers

Who it affects: Contractors working through umbrella companies, and the agencies that supply them.

Before 6 April 2026
Current arrangement:

Agency pays umbrella company gross. Umbrella handles PAYE and passes net pay to worker.

From 6 April 2026
New arrangement:

Agencies must apply PAYE directly to umbrella worker pay. Umbrella company role in PAYE chain changes fundamentally.

This change targets the minority of umbrella companies operating disguised remuneration schemes — but the compliance obligation falls on agencies, not workers. If your agency hasn't yet spoken to you about this, chase them before April 6.

For standard umbrella contractors on compliant schemes, the practical impact is mainly administrative — but take-home pay calculations should be re-modelled for 2026/27.

Full umbrella PAYE changes guide →
3

Income Tax Freeze Continues — Fiscal Drag Bites Harder

📈 All Contractors

Who it affects: All contractors — inside and outside IR35 — particularly those earning above £50,270.

Context: April 2025
Employer NI already rose

From 13.8% → 15%, threshold dropped from £9,100 → £5,000 — adding £1,500–£3,500/yr for inside IR35 contractors.

2026/27 Ongoing
Tax bands still frozen

Personal allowance (£12,570) and higher rate threshold (£50,270) frozen until at least 2028. Day rate rises = higher effective tax.

The income tax band freeze means that as contractors win rate increases to keep pace with inflation, a greater proportion of that extra income falls into higher tax bands — a process known as fiscal drag. A contractor who moved from £400/day to £450/day since 2022 is paying a significantly higher effective rate despite the bands looking unchanged on paper.

For outside IR35 contractors, optimising your salary/dividend split for 2026/27 is worth revisiting with your accountant — the freeze and the 15% employer NI already in effect interact with the higher-rate dividend tax band in ways that reward careful planning.

Model your 2026/27 take-home →
4

Dividend Allowance & Outside IR35 Pay

💰 Outside IR35

Who it affects: Contractors operating outside IR35 via a limited company who take dividends.

2025/26
Dividend allowance: £500

Dividend tax rates: 8.75% / 33.75% / 39.35%

2026/27
Dividend allowance: £500

Rates unchanged. But employer NI cost embedded in engager's pricing may compress rates offered.

Outside IR35 contractors aren't directly hit by employer NI — but engagers are. As the cost of employing inside IR35 workers rises, some clients may try to compress day rates to offset it. Knowing your numbers going into rate negotiations is more important than ever.

The dividend allowance has been held at £500 for 2026/27. Day rate modelling for outside IR35 contractors should factor in the current NI and income tax bands, as these affect salary/dividend split optimisation.

Model your outside IR35 take-home →

✅ What Is NOT Changing in April 2026

✓The IR35 legislation itself — Chapter 10 ITEPA 2003 is unchanged. Status tests (substitution, control, MOO) remain the same.
✓SDS requirements — medium and large companies still must issue a Status Determination Statement. The 45-day challenge window is unchanged.
✓The small company exemption itself — small companies are still exempt from issuing SDS. Only the definition of "small" changes.
✓CEST — HMRC's Check Employment Status for Tax tool continues to operate as before (and with all its existing limitations).
✓The three status tests — substitution rights, control, and mutuality of obligation remain the legal framework for determining IR35 status.
✓Your ability to challenge an SDS — contractors retain the statutory right to raise a disagreement within 45 days of receiving a determination.

Timeline: What's Happening and When

Now

Check your client's company size

Use the new thresholds to see if your current client will reclassify as small from April 6.

Before 5 April

Review your contract & working practices

If your client will be newly small, you'll be self-assessing from April 6. Get a contract review done now.

6 April 2026

All four changes take effect simultaneously

New small company thresholds live. Employer NI at 15%. Umbrella PAYE rules change. New tax year begins.

April–May 2026

First payroll runs under new rules

Check your payslips reflect the correct rates. Newly-small clients should confirm they're no longer issuing SDS.

⚡ Your April 2026 Action Checklist

1

Check your client's company size against the new thresholds

Turnover under £15m, balance sheet under £7.5m, or fewer than 50 employees — two of three = small = exempt from April 6.

2

If your client becomes small: get your contract reviewed now

You'll be self-assessing under Chapter 8. Make sure your contract and working practices support an outside IR35 position.

3

Model your 2026/27 take-home pay

Whether inside or outside IR35, the April 2026 rate changes affect your net pay. Run the figures before your next contract negotiation.

4

If you're outside IR35 — check your insurance cover

If you're newly responsible for your own status determination, make sure you have IR35 insurance in place before any potential investigation.

5

If you're through an umbrella — speak to your agency now

Ask how the April 6 PAYE change affects your payslip. If they can't answer, that's a red flag.

Frequently Asked Questions

What IR35 changes happen in April 2026? +
Three significant changes: (1) the small company threshold increases, reclassifying ~14,000 companies as small and exempt from SDS duties; (2) umbrella PAYE rules change so agencies deduct tax directly; (3) income tax bands remain frozen, meaning fiscal drag continues to push contractors into higher bands as rates rise. Note: the employer NI increase (13.8% → 15%) happened in April 2025 — it is not a new April 2026 change, but continues to affect inside IR35 contractors.
Do the IR35 rules themselves change in 2026? +
No. The core IR35 legislation is unchanged. The status tests — substitution, control, and mutuality of obligation — remain exactly the same. What changes is which companies qualify as small (and are therefore exempt), and the tax rates applied when a contractor is inside IR35.
Does the small company IR35 exemption change in 2026? +
Yes — but only the definition of "small" changes. From 6 April 2026, a company is small if it meets two of: turnover under £15m (was £10.2m), balance sheet under £7.5m (was £5.1m), fewer than 50 employees (unchanged). If your client reclassifies as small, they stop issuing SDS and you self-determine your IR35 status again.
How does the employer NI increase affect inside IR35 contractors? +
Employer NI rises from 13.8% to 15%, and the secondary threshold drops from £9,100 to £5,000. The deemed payment for inside IR35 contractors deducts employer NI before calculating PAYE. A higher rate plus a lower threshold means more is deducted, reducing take-home pay by roughly £1,500–£2,000/year on a £500/day contract.
Should I check my client's company size before April 2026? +
Yes, immediately. If your client is a medium company currently issuing you an SDS, check whether they'll reclassify as small (turnover under £15m, balance sheet under £7.5m, fewer than 50 employees — two of three). If they will, from 6 April you need to self-assess your IR35 status, which means reviewing your contract and working practices urgently before the date.
What changes for umbrella company contractors in April 2026? +
Agencies that supply workers through umbrella companies must apply PAYE directly from 6 April 2026. This restructures the payment chain and primarily affects non-compliant umbrella arrangements. For standard umbrella workers on compliant schemes, the impact is mainly administrative — but your take-home pay calculations should be re-modelled for 2026/27.