Paperwork after a full day on the tools
Evenings shouldn't be spent writing up quotes and invoices. Create them on site in minutes, from templates that remember your rates.
The job management app for electricians
Quote rewires in minutes, get sign-offs signed on your phone, issue certificates, and invoice before you leave the property.
Free to start · No card · No download needed — works in your browser
Sound familiar?
The admin headaches every electrician knows — solved.
Certificates scattered across pads and folders
Issue and store certificates digitally against each job, with customer signatures captured on your phone.
Chasing payment for finished work
A signed job sign-off plus an instant invoice with online payment gets you paid days faster.
Built around a electrician’s working day
Fast, professional quotes
Build quotes for consumer unit swaps, rewires, EV charger installs, and callouts — and send them with a digital signing link for acceptance.
Certificates & sign-offs
Generate certificates and signed job sign-off PDFs stored against the job, so your records are always to hand.
Job diary that works offline
See your week at a glance, even in a basement with no signal. Everything syncs when you're back online.
Invoicing & online payments
Invoice on site and let customers pay by card from a link. Track expenses and materials against each job.
Need the full tour? See everything the TradePlanr app does including digital signatures and job sign-offs.
Not the one on the tools? There’s a version of this page for whoever runs the office.
Got engineers on the books? TradePlanr for electrical contractors.
Free calculators every electrician can use
No sign-up, no subscription — the same trade calculators built into the TradePlanr app, free on the web.
Voltage Drop
Volt drop for twin & earth over a run, checked against BS 7671 limits.
Electric Shower Cable & MCB
Design current, MCB rating and typical cable size for an electric shower circuit.
Max Zs Lookup
Maximum earth fault loop impedance for BS EN 60898/61009 devices.
Zs from Ze + R1+R2
Calculated Zs for a circuit from external loop and conductor resistances.
R1+R2 from Cable Size
Expected conductor resistance for a run from OSG Table I1 values.
Adiabatic CPC Check
Minimum CPC size: S = √(I²t) / k.
Cable Sizing (Correction Factors)
Required tabulated capacity It ≥ In / (Ca·Cg·Ci·Cf), with a T&E suggestion.
Prospective Fault Current
Fault current from a measured loop impedance.
Ring Final Expected Readings
Cross-connected test values from end-to-end ring measurements.
Max Demand (Diversity)
Household maximum demand with OSG diversity allowances.
Ohm's Law / Power
Enter any two of V, I, R, P — the rest are calculated.
kW ↔ Amps
Convert between power and current for single or three phase.
Trunking Fill
Minimum trunking size for a bundle of singles (OSG factors).
EV Charger Load Check
Whether an EV charger fits the existing supply, or needs load management.
EV Charging Cost
What it costs to charge an EV at home — per charge, per mile and per year.
Solar PV Payback
Estimate annual savings and the payback period on a solar PV system.
Running Cost
What an appliance costs to run at a given tariff.
Unit Converter
Common trade unit conversions.
Markup & VAT
Sell price from cost, markup and VAT.
Job Price / Quote Builder
Build a quote from materials, labour and margin.
Day Rate ↔ Hourly Rate
Convert between hourly, day, week and year.
CIS Tax Deduction
CIS deducted and net pay on a subcontractor invoice.
VAT Flat Rate vs Standard
Compare VAT owed on the flat rate and standard schemes.
Self-Employed Tax & NI
Estimate Income Tax, Class 4 NI and take-home from your annual profit.
VAT Registration Threshold
How close your rolling turnover is to the £90,000 VAT registration threshold.
What Should I Charge?
Work back from the income you want to the day and hourly rate you need to charge.
Late Payment Interest
Statutory interest and compensation you can claim on an overdue commercial invoice.
Deposit & Staged Payments
Split a job into a deposit and staged payments.
Retention (Commercial)
Retention held on a contract and when each half is released.
Mileage / Fuel per Job
Mileage claim or actual fuel cost for a journey.
Real Hourly Rate
Your true hourly rate once travel, quoting and admin time are counted.
“The job diary is brilliant. I can see my whole week at a glance and my customers love the professional invoices.”
Dave Williams
Electrician, Manchester
Join electricians across the UK using TradePlanr
Start free in your browser and set up your first job in minutes — no download needed.