๐Ÿ”ง Built for Plumbing Contractors

The Bookkeeping App Built for Plumbers

Track job costs, materials, mileage, and 1099 subs from the truck โ€” not from a desktop you never sit at. A simpler, cheaper QuickBooks alternative that keeps your expenses categorized and tax-ready all year. Made for solo plumbers and small plumbing crews.

Card required, no charge until day 15 ยท Schedule C ready ยท iOS app included

Your books shouldn't wait until midnight

Plumbers spend the day under sinks, in crawl spaces, and running to the supply house โ€” not at a computer. By the time you sit down to "do the books," you've forgotten which fittings went to the Henderson repipe and which water heater receipt was for the rental on 4th South.

Fast Pay Books is a mobile-first bookkeeping app made for exactly that. You log income, materials, expenses, and mileage from your phone in the moment, tag each one to a job, and your expenses stay categorized and tax-ready all year. No QuickBooks file to wrestle with, no shoebox of receipts in the truck.

What plumbers actually need from a bookkeeping app

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Expense tracking by client

Categorize fixtures, fittings, permits, and helper pay, and tag them to a client so your costs are captured as you spend.

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Automatic mileage

Trips between jobs, the supply house, and the bank logged at the 2026 rates of 72.5ยข/mi through June 30 and 76ยข/mi after for your Schedule C.

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Materials tracking

Snap a supply-house receipt, categorize it, and keep copper, fittings, and fixtures out of your taxable profit.

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Invoice & get paid

Send an invoice from the driveway and get paid by card or ACH โ€” Stripe payments built in, no add-on.

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contractor payment records

Track payments to helpers and subs, with running totals so you can see who crossed the $600 threshold.

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Tax-ready exports

Export a clean categorized income and expense summary as PDF or CSV for your return or your CPA.

Real example: A solo plumber bids a $1,950 water-heater install. Materials run $560, a half-day helper is $160, and 40 miles of driving is about $28. True profit is $1,202 โ€” not $1,950. Fast Pay Books shows you that number per job automatically so your next bid is priced from reality.

Fast Pay Books vs QuickBooks for Plumbers

Side-by-side on the things plumbing contractors actually use. Pricing verified 2026.

Feature Fast Pay Books Basic QuickBooks Online Simple Start QuickBooks Self-Employed
Monthly price$24.99/mo$38/mo$20/mo (Solopreneur)
Mobile-first (works from the truck)โœ“ Native iOS appDesktop-firstMobile, but limited
Expense tracking by client & categoryโœ“ Tag from your phoneManual setup / add-onNot supported
Automatic mileage trackingโœ“ Background, 72.5ยข/76ยข 2026Add-onReported broken post-migration
Invoicing + online paymentsโœ“ Stripe + ACH built-inโœ“Limited add-on
contractor payment records & running totalsโœ“ManualNo
One-tap tax-ready expense reportsโœ“ PDF + CSVCustom report buildYes
Setup timeMinutesHours (chart of accounts)Minutes
Free trial14 days30 days30 days

QuickBooks Online is powerful, but it treats job costing as a manual project add-on. For a solo plumber or small crew, Fast Pay Books is cheaper, faster to set up, and built around how you actually work โ€” from the truck.

Mileage adds up faster than plumbers expect

Driving between calls, to the supply house twice a day, and to the bank stacks up. At the 2026 rates (72.5ยข per mile through June 30, 76ยข after), a plumber putting 14,000 business miles on the truck has a $10,395 deduction โ€” money most contractors leave on the table because they never logged it. The iOS app can detect and log trips automatically. Run the numbers on our mileage deduction calculator.

Paying helpers and subs the right way

If you pay an unincorporated sub or helper $600 or more during the year by cash, check, or bank transfer, you're required to issue a 1099-NEC in January. Fast Pay Books tracks those payments all year and tells you who needs a form. Our 1099-NEC guide walks through exactly who gets one.

Filing as a sole proprietor or single-member LLC

Most solo plumbers file a Schedule C with their personal return. Every expense you tag in Fast Pay Books maps to a Schedule C line, so the form is essentially done before you start it. Tools, supplies, vehicle costs, insurance, phone, and licensing all land where the IRS expects them.

Simple pricing for owner-operators

A solo plumber is fully covered on the Basic plan at $24.99/mo โ€” income and expense tracking, mileage, job tagging, invoicing, and tax-ready reports. Running a crew or multiple entities? Compare plans to find the right fit. Every plan starts with a 14-day free trial. Already comparing options? See our full QuickBooks alternatives guide built for the trades.

Frequently asked questions

What is the best bookkeeping app for plumbers?

Plumbers need an app that works from the truck, tracks materials and job costs per call, logs mileage automatically, and produces tax-ready expense reports. Fast Pay Books is built mobile-first for solo plumbers and small plumbing contractors who don't want to run desktop accounting software like QuickBooks Desktop.

How do plumbers track job costs and materials?

Categorize every fixture, fitting, and supply-house run as it happens and tag it to the client. Fast Pay Books lets you snap a receipt and record it from your phone, so your materials and drive time are captured accurately instead of reconstructed at year-end.

Is Fast Pay Books cheaper than QuickBooks for a plumber?

Fast Pay Books Basic is $24.99/mo and includes invoicing, expense tracking, mileage, job tagging, and tax-ready reports. QuickBooks Online Simple Start is $38/mo and still treats job costing as a manual add-on. For a solo plumber, Fast Pay Books is both cheaper and faster to set up.

Can I send invoices and get paid from the same app?

Yes. Fast Pay Books includes invoicing with Stripe and ACH payments built in, so you can send an invoice from the driveway and get paid by card or bank transfer. QuickBooks Self-Employed treats invoicing as a limited add-on.

Do plumbers need to file 1099-NECs for subs and helpers?

If you pay an unincorporated sub or helper $600 or more during the year by cash, check, or bank transfer for services, you must issue a 1099-NEC. Record every sub or helper payment in Fast Pay Books as you make it, categorized and tied to the vendor, so you have a clean payment history to work from at 1099-NEC time instead of reconstructing it from your checkbook.

Related resources

Do Your Books From the Truck.

Fast Pay Books tracks job costs, materials, mileage, and subs from your phone โ€” and keeps your expenses categorized and tax-ready all year. A simpler QuickBooks alternative made for plumbers.

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