Nine interactive calculators for the questions that come up most. Input your numbers and get an instant result based on confirmed 2026/27 HMRC rates.
Estimate your income tax liability and effective rate. Simple mode for a quick estimate; Advanced for a full breakdown by income type including National Insurance. 2026/27 rates, England/Wales/NI.
All sources combined. For a breakdown by income type, use Advanced mode.
Dividend income and National Insurance are not included in Simple mode. Use Advanced for a full breakdown. Full guide covers all bands →
2026/27: PA £12,570 · Basic 20% (to £50,270) · Higher 40% (to £125,140) · Additional 45% · PA tapers above £100k · Dividends: allowance £500, rates 10.75%/35.75%/39.35% · Employee NI 8% (£12,570–£50,270), 2% above · Class 4 NI 6% (£12,570–£50,270), 2% above · Scotland has separate income tax rates — this tool covers E/W/NI only.
Enter your taxable profit and number of associated companies to see the estimated CT liability, effective rate, and applicable tier. 2026/27 rates. Assumes a standard 12-month accounting period.
After allowable deductions, before corporation tax.
Enter the number of other companies (not including this one) that you, or connected persons, control or hold a 50%+ interest in — where those companies have trading or investment activity. Dormant companies are excluded. If unsure, check HMRC guidance →
Marginal Relief applies between the adjusted small and main rate limits. Associated companies reduce both limits proportionally. Full guide covers CT in detail →
2026/27: Small profits rate 19% (≤ £50,000 ÷ companies) · Main rate 25% (≥ £250,000 ÷ companies) · Marginal Relief 3/200 fraction between limits · Large company threshold £1,500,000 ÷ companies. Associated company rules may alter thresholds significantly.
Model salary and dividend splits to understand your estimated personal tax position. Advanced mode adds corporation tax saving analysis to show the true net cost of each drawing structure. 2026/27 rates.
Employer NI is a company cost, not a personal deduction. Net take-home = salary + bonus + dividends minus personal income tax and employee NI. Corporation tax on company profits is not reflected. Use Advanced mode to see the CT saving analysis.
2026/27: ER NI 15% above £5,000 secondary threshold · EA £10,500 · EE NI 8% (£12,570–£50,270), 2% above · Dividend allowance £500 · Dividend rates 10.75%/35.75%/39.35% · CT small profits rate 19%, main rate 25%, marginal relief between £50,000–£250,000.
Select your business type to see the applicable flat rate percentage. Current 2026/27 rates.
* General building: materials >10.5% of VAT-inclusive turnover.
** Labour-only: materials ≤10.5% of VAT-inclusive turnover.
Select your business type to see your flat rate.
HMRC FRS percentages — confirmed for 2026/27. A 1% discount applies in the first year of VAT registration. FRS registration threshold: £150,000 VAT-inclusive turnover. Always confirm your category with your accountant.
Estimate your net VAT position for a quarter. Standard VAT or Flat Rate Scheme. All figures should be VAT-inclusive (gross).
Total vatable sales for the quarter, including 20% VAT.
Gross vatable purchases for the quarter. Only include expenses that carry VAT.
Enter your figures to see your estimated VAT position.
VAT on sales and purchases is calculated as 1/6 of the gross VAT-inclusive figure (assumes standard 20% VAT rate). FRS: VAT payable = gross turnover × flat rate %. Capital asset reclaim = gross asset cost / 6. This is an estimation tool only — partial exemption, exempt supplies, and mixed-rate supplies are not accounted for.
Enter your VAT quarter end date to see the submission and payment deadline. Standard online VAT returns.
The last day of your VAT quarter — e.g. 31 March, 30 June, 30 September, 31 December.
Enter your quarter end date to see your deadline.
Online VAT returns and payments are due 1 calendar month and 7 days after the end of the VAT accounting period. Annual Accounting and Payment on Account users have different deadlines — confirm with your accountant.
Enter your company year end to see all key filing and payment deadlines. Assumes a private limited company with a standard 12-month accounting period.
The last day of your company's accounting period.
Enter your year end date to see your deadlines.
Accounts at Companies House: 9 months after year end (private companies) · CT600 filing: 12 months after year end · CT payment: 9 months and 1 day after year end (small/medium companies) · Large companies pay CT in quarterly instalments — check with your accountant.
Calculate the taxable benefit on a company car, your estimated income tax cost, and the employer Class 1A NI payable by the company. 2026/27 rates. To find CO₂ emissions, use the DVLA vehicle information tool with the vehicle's registration.
The manufacturer's published list price when brand new — not what you paid, not the lease cost. Include all factory options.
Enter 0 for a pure electric vehicle. Find emissions on the DVLA tool or V5C logbook.
Used to determine your marginal income tax rate on the benefit.
Enter vehicle details to see the estimated benefit.
2026/27 BIK rates: EV 4% · PHEV rates vary by range (4%–16%) · Petrol/diesel 17% at 51–54 g/km rising 1% per 5 g/km band, capped at 37% · Class 1A NI: 15% · Income tax collected via tax code adjustment in most cases — actual cash cost may differ. P11D reporting applies.
Calculate the CGT on a disposal, including Business Asset Disposal Relief (BADR) where applicable. 2026/27 rates. Annual exempt amount: £3,000.
Acquisition
What you paid for the asset. For inherited assets, use the probate value at the date of inheritance.
Legal fees, stamp duty, and other costs of buying the asset.
Capital improvements made to the asset (not maintenance or repairs).
Disposal
Legal fees, agent fees, and other costs of selling.
Your tax position
Used to determine how much basic rate band remains for the gain.
Enter disposal details to see your estimated CGT.
2026/27: Annual exempt amount £3,000 · Standard CGT: 18% (basic rate band), 24% (higher/additional) · BADR: 18% flat (lifetime limit £1,000,000) · Residential property: 18%/24% · 60-day reporting applies to residential property disposals. Losses, other reliefs, and prior year interactions are not accounted for — always confirm with your accountant.
Want the full picture?
The tools give you quick answers. The TaxClarity Guide gives you the full context — every rate, every threshold, every rule, in nine plain-English chapters. All 2026/27.