TradeSnap · per-day, per-job decision cockpit

Will the day on site actually pay? Decide before you accept.

Free decision tools for UK electricians, plumbers, builders and sub-contractors. Day-rate margin. CIS deductions. IR35 vs PAYE. Mileage, van, tools. The per-job profit — before you sign and turn up.

Run the day-rate calc → All calculators
5
Calculators
20%
CIS standard rate
£0
To find out
60s
Per answer
Hero calculator · /calc/day-rate-margin

What does this day actually pay — after CIS, fuel and van?

Six fields. The net cash in hand after CIS deduction, fuel, mileage and a sensible cost-per-mile for the van. Accept, push back, or walk away.

Gross day rate before CIS or any deductions.
Your status with the contractor's CIS scheme.
Including travel + waiting time you can charge.
Total miles — home → site → home.
HMRC simplified rate 45p / mile covers fuel + wear. Adjust for diesel van fleet.
If you supply materials before contractor reimburses.

TradeSnap is decision support · not tax advice · operator stays accountable

The other four

Four more answers before you sign.

/calc/cis-ir35-awr

CIS + IR35 + AWR decision tree

Are you in CIS, IR35 or AWR territory? The status check that flags risk before the contractor's accounts team does it for you.

/calc/van-tool-allowance

Van + tool + capital allowance

Capital allowances on the van, plant and tools. AIA vs writing-down. What you're entitled to claim back this tax year.

/calc/mileage-travel-time

Mileage + travel-time profitability

The drive to site eats your margin. This calc tells you the break-even radius — past which a job stops paying.

/calc/sa103-expenses

Annual SA103 simplified expense check

Self-assessment SA103 (self-employment) prep. Simplified expense vs actual. CIS refund path. What HMRC actually wants.

All four are wired with the same lead-capture pattern — drop your email after any result.

Also useful

Once the day is paying right…

TradeSnap covers your day. These cover the contract, the labour, and the materials.

How TradeSnap stays current

Built against HMRC rules. Refreshed weekly.

CIS — Construction Industry Scheme
HMRC standard 20% deduction (verified subbies), 30% unverified, 0% gross payment status
IR35 / off-payroll working
Chapter 8 / Chapter 10 ITEPA 2003. End-client liability for medium + large since April 2021
AWR — Agency Workers Regs
12-week qualifying period for parity with permanent staff
HMRC mileage rates 2025-26
45p / mile first 10,000 miles · 25p / mile thereafter (simplified expense)

FAQ

Is TradeSnap tax advice?
No. TradeSnap is decision support — the per-job + per-year numbers before you commit. For regulated tax advice talk to a CIOT-qualified accountant. We point you in the right direction; we don't replace them.
Why 20% CIS deduction by default?
HMRC standard rate for CIS-registered subcontractors that the contractor has successfully verified. Unverified subbies suffer 30%. Subbies with Gross Payment Status (turnover threshold + compliance record) suffer 0%. The calc handles all three.
Does CIS deduction = the tax I owe?
No — CIS deduction is a payment on account against your eventual income tax + NI bill. You reclaim or top up via self-assessment SA103. Most subbies over-pay CIS through the year and reclaim. The annual SA103 calc walks this.
IR35 vs CIS — which one applies?
CIS applies to construction operations payments under a Section 7 schedule. IR35 applies to off-payroll work via a Personal Service Company. They can both apply to the same person on different contracts. The decision-tree calc walks the test.
Where does my email + result go?
Your result is sent to your inbox. Your details land in the BRG intelligence layer (Supabase, RLS-protected) so we can follow up with a sector plan. We never share or sell your data. Consent is explicit and tied to the marketing opt-in box.
Decision support, not tax or compliance advice. Operator stays accountable.