Quick, no-signup tools for UK contractors, landlords and small businesses — built to match current HMRC rates and statutory rules, checked regularly.
Work out the 20%, 30% or gross-status deduction on a subcontractor's invoice — labour only, materials excluded.
Open calculatorEstimate your Self Assessment refund by comparing CIS deducted against tax and NI actually due.
Open calculatorWork out retention withheld on a contract, split between practical completion and defects liability release.
Open calculatorCalculate statutory interest and fixed compensation owed on an overdue B2B invoice under UK law.
Open calculatorSee the real annual cost of full management, rent collection or tenant-find — including VAT.
Open calculator