Plumber Tax Calculator 2025/26
Calculate your take-home pay as a self-employed plumber. See your tax, NI, and deductible expenses like tools, van costs, and materials before filing.
Common deductions for plumbers
These are typical expenses you may be able to claim against your taxable profit.
Tools and equipment
Wrenches, pipe cutters, soldering equipment, drain cameras, and other trade tools. Items under £1,000 can be claimed in full under the Annual Investment Allowance.
Van and vehicle costs
Running costs for your work van — fuel, insurance, road tax, servicing, and repairs. Claim the business proportion if mixed use.
Materials and supplies
Pipes, fittings, solder, sealant, and other materials purchased for jobs (not recharged to customers).
Work clothing and PPE
Overalls, steel-toe boots, gloves, knee pads, and other protective equipment required for the job.
Gas Safe / trade certifications
Gas Safe registration, Water Safe membership, and any trade qualification renewal fees.
Public liability insurance
Professional indemnity and public liability insurance premiums for your plumbing business.
Phone and advertising
Business phone, website hosting, Checkatrade or MyBuilder listings, and local advertising costs.
Training and CPD
Courses to maintain or upgrade your qualifications — unvented hot water, renewables, or new regulations training.
Yearly
£25,120
take-home
Monthly
£2,093
take-home
Weekly
£483
take-home
Deductions
Effective rate
16.27%
The actual percentage of your total income going to income tax and NI combined.Marginal rate
28%
The tax rate on your next £1 of income. Above £100k this can be 60% due to Personal Allowance tapering.Income tax bands
Where your money goes
Want a personalised breakdown from your actual bank statements?
Upload your statements and get AI-powered expense categorisation, savings identification, and a downloadable PDF report.
Try AI Tax Advisor — £9.99What expenses can a self-employed plumber claim in the UK?
Self-employed plumbers can claim a wide range of business expenses against their taxable profit. These include tools and equipment, van running costs (fuel, insurance, servicing), materials not recharged to clients, work clothing and PPE, Gas Safe registration, public liability insurance, phone costs, advertising, and training. For 2025/26, the first £12,570 of profit is tax-free, with 20% on profits up to £50,270.
- Tools: wrenches, pipe cutters, drain cameras — claim in full
- Van: fuel, insurance, MOT, servicing (business proportion)
- Gas Safe and trade certification fees
- PPE: overalls, steel-toes, gloves, knee pads
- Training: new qualifications and CPD courses
Last reviewed:
Want a personalised tax breakdown?
Upload your bank statements and see which expenses you can claim as a plumber — tools, van, materials, and more.
Get Your AI Tax Report — £9.99One-time payment. No subscription. No account required.