Track CIS deductions, see your estimated Self Assessment refund in real time, and file CIS300 returns straight from your phone. No spreadsheets. No accountant guesswork.
If you're in UK construction and CIS is taking your time and money, this is for you.
Roofers, plumbers, electricians, joiners, plasterers, ground workers. Anyone who gets 20% (or 30%) deducted from their invoices.
Main contractors and small construction businesses paying subbies under CIS.
Watch your estimated Self Assessment refund update with every payment you log. 2025/26 tax rates baked in.
Snap a Payment & Deduction Statement and we'll match it to your records. Lose-the-paperwork problem solved.
Got CIS deducted on materials? We flag it. That's money back in your pocket.
Never miss a CIS300 deadline. £100/£200/£300 penalty schedule shown live so you know exactly what's at stake.
Connect your Government Gateway. Verify subbies and submit CIS300 returns directly to HMRC.
SA103 figures and SA108 supplements ready to drop into your tax return. Or hand to your accountant.
From April 2026, sole traders earning over £50,000 must file MTD ITSA quarterly returns — including CIS subbies. CIS Tracker is built ready. From 2027 the threshold drops to £30,000. From 2028, £20,000.
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Or £39.99/year — save £20
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Download CIS Tracker free. Pay nothing for the first 7 days of any paid tier.
Built in Liverpool by a working roofer who got tired of CIS spreadsheets.