Contractor Calculators & Tools (2024–25)
Fast, accurate calculators for UK contractors and limited company directors. Updated for 2024–25.
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IR35 Tax Calculator
Compare Outside vs Inside take-home with dividends, PAYE and NI—plus pension options.
Personal PAYE Allowances
| Allowance | 2022/23 | 2023/24 | Change |
|---|---|---|---|
| Basic | £12,570 | £12,570 | 0 |
| Blind Person's Allowance | £2,600 | £2,870 | +£270 |
* Personal Allowance tapers by £1 for every £2 of income above £100,000.
Tax Brackets
| Tax Rate | 2022/23 | 2023/24 | Change |
|---|---|---|---|
| Basic rate 20% | TFA – £37,700 | TFA – £37,700 | no change |
| Higher rate 40% | £37,501 – £150,000 | £37,501 – £125,140 | –£24,860 |
| Additional rate 45% | £150,000+ | £125,141+ | –£24,860 |
TFA = Tax-Free Allowance. Rates apply after the personal allowance is deducted from gross pay.
No change to the Basic Rate bracket or Personal Allowance in 2023/24. Higher and Additional rate thresholds decreased, pulling more income into higher bands.
Change in Take-Home Pay After Tax and NI
Source: listentotaxman.com®
| Gross Wage | Net Pay 2022/23 | Net Pay 2023/24 | Difference |
|---|---|---|---|
| £10,000 | £10,000 | £10,000 | 0 |
FAQs: Choosing the Right Calculator
Should I use the IR35 Calculator or PAYE first?
If your client issues a Status Determination Statement (SDS) or you're unsure about working practices, start with IR35. If you're definitely on PAYE, head straight to NI/PAYE.
Do the calculators support pension contributions?
Yes—IR35 supports employer vs employee contributions. PAYE calculators typically model employee contributions via salary sacrifice or relief at source.
Are VAT thresholds considered?
Use the VAT Calculator to check gross vs net billing and VAT due. The current VAT registration threshold can affect whether you charge VAT on invoices.
Can I link these from my contract rate page?
Yes—internal linking from rate guides and IR35 articles helps users and improves SEO relevance for contractor tax topics.