Tax calculators
built for solo
directors.
Salary vs dividends, corporation tax, IR35, home office — all the calculations that matter for a one-person limited company, using 2026-27 HMRC rates.
April 2025 employer NI changes apply: rate 15% (was 13.8%), threshold £5,000 (was £9,100). This significantly affects optimal director salary. Read our guide
2026-27 rates at a glance
£12,570
Personal Allowance
Tapers above £100k
£500
Dividend Allowance
Tax-free per year
15%
Employer NI Rate
Above £5,000/yr
19%
Corp Tax — Small
Profits ≤ £50k
25%
Corp Tax — Main
Profits ≥ £250k
£10,500
Employment Allowance
Eligible companies
Source: HMRC 2026-27 tax year, effective from April 2026.
Every number a solo director
needs to run.
No account. No paywall. Results in seconds.
Salary vs Dividend Calculator
Optimal salary/dividend split to legally minimise total tax. Includes employer NI, corp tax, and effective rate.
Open calculatorCorporation Tax Calculator
Small profits rate, marginal relief, and main rate — with a clear breakdown of what your company owes.
Open calculatorIR35 Take-Home Calculator
Inside vs outside IR35 net pay comparison. See the exact pound-for-pound impact before accepting a contract.
Open calculatorHome Office Calculator
HMRC flat rate (£6/week) vs apportioned method. Which saves more in corporation tax relief?
Open calculatorVAT Flat Rate Scheme
Is the VAT Flat Rate Scheme profitable for your company? Calculate the net benefit by sector rate.
Open calculatorDividend Tax Calculator
Dividend tax at each rate band — basic, higher, and additional — stacked correctly on top of salary.
Open calculatorBuilt for one-person
limited companies
Generic tax calculators ignore the specifics of a solo director — the employer NI threshold change, the salary–dividend interplay, corporation tax marginal relief, and the £100k personal allowance trap.
- Employer NI from £5,000 — April 2025 rates applied
- Correct marginal relief in the £50k–£250k profit band
- Dividend tax stacked correctly on top of salary income
- Personal allowance taper above £100,000 modelled
- No registration, no email, no cost — ever
Quick calculation
Optimal salary 2026-27
Personal allowance — no income tax
£12,570
Max tax-free dividends
Dividend allowance
£500
Typical effective rate
vs. 40%+ as PAYE employee
~21%
Not just calculators —
explanations you can
actually understand.
Plain-English guides written for directors, not accountants.
View all guidesFind out how much you could save.
2-minute salary vs dividend calculation. No login needed.