TOOL 01 / LIVECIS
CIS tax refund estimator
For subcontractors. Estimate your CIS refund or tax bill for 2025/26 or 2026/27, and see which Self Assessment boxes the figures go in.
Open tool SECTION 03 / INSTRUMENTS06 TOOLS
Tools
Estimates, not advice.
Free calculators for UK money questions: CIS tax for construction trades, Inheritance Tax, probate and gifts, interest on late invoices, and the VAT threshold. They run in your browser and nothing you type is sent anywhere.
Each one links to the GOV.UK rules it uses. They give estimates, not tax, legal or financial advice. Check anything that matters with HMRC or a qualified adviser.
TOOL 02 / LIVECIS
CIS deduction calculator
For contractors and subcontractors. Check what should come off an invoice at 20%, 30% or gross: labour only, with materials and VAT left out.
Open toolTOOL 03 / LIVEPROBATE
Probate and Inheritance Tax calculator
For England and Wales. Estimate the Inheritance Tax on an estate, with the residence allowance, gifts and the probate fee.
Open toolTOOL 04 / LIVELATE PAYMENT
Late payment interest calculator
For businesses chasing a late invoice. Work out the statutory interest at 8% plus base rate, and the £40, £70 or £100 compensation.
Open toolTOOL 05 / LIVEINHERITANCE TAX
Gift Inheritance Tax taper checker
For anyone who has given money away. See how far a gift is through the 7 years, its taper rate, and the day it drops out of Inheritance Tax.
Open toolTOOL 06 / LIVEVAT
VAT threshold checker
For sole traders and small firms. Enter 12 months of sales and see your rolling total against £90,000, your headroom and any deadline to register.
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