Tax Accountant for Plumbers in Ontario and Across Canada
We file your T2 and your T5018 subcontractor slips, cost every job so you see real profit, claim your service van and tools in full, and keep WSIB and HST onside. Whether you run residential service calls, commercial contracts or a drain and gas-fitting crew, we handle the plumbing books, the subcontractor slips and the job costing, and plan the salary, dividends and eventual sale of your plumbing corporation — with AFFORDABLE flat fees.
AFFORDABLE Plumber Tax Accountant
Running a plumbing business means materials, subcontractors, service vans and WSIB premiums all eat the margin before you ever see profit, and the trades are a standing CRA audit target. Without job costing you cannot tell which service calls and installs actually make money, and without T5018 subcontractor slips and a clean T2 you are exposed. That is why you need a plumbing business accountant who works in the trade every day. At Gondaliya CPA, we specialize in job costing and corporate tax planning for plumbers, delivering AFFORDABLE flat-fee support that keeps your plumbing corporation CRA-compliant and stops you paying more tax than you owe.
As experienced accountants for plumbers, we work with residential plumbers, commercial plumbing contractors, drain and sewer contractors, and gas fitters and new-construction plumbers across Ontario. We file your T2 and T5018, cost each project, claim your Class 10 service van and Class 8 and Class 12 tools in full, and give you year-round support so nothing waits until year-end.
Let us handle the numbers so you can focus on the pipes, the crew and the callouts.
Our Official Partners
Accounting That Understands How a Plumbing Business Actually Works
A plumbing business carries financial pressures a desk-bound company never faces. Materials and subcontractors go out before you get paid, your service van and tools tie up capital, WSIB and payroll run every week, and CRA watches the trades closely. At Gondaliya CPA, we understand the financial reality of a plumbing contractor and provide practical, trade-focused solutions across the GTA and all of Ontario.
Stay Compliant and Minimize Your Plumbing Business Tax
For a plumbing contractor, staying onside with CRA, WSIB and Skilled Trades Ontario and paying the least legal tax are the same job. We keep every filing on schedule while claiming every deduction the T2 allows, so nothing is missed and nothing invites a reassessment.
Accounting & Tax Experts for Plumbers
- AFFORDABLE + Fully Licensed CPA Firm
- Business and Corporate Tax Expert
- Small & Medium Business Expert
- Accounting, bookkeeping, and tax filing
- Certified CPA
- 1300+ 5-star Google reviews
- 30-Day Money-Back Guarantee
- 60-Day Fees Matching Policy
Why Choose Our Accounting Services for Plumbers?
Tax Planning — Trade & Equipment Expertise
We know the deductions that carry a plumbing business: the Class 10 service van, Class 8 and Class 12 tools, and apprentice wages, all timed against the $500,000 Small Business Deduction and the $1.25M Lifetime Capital Gains Exemption on a future sale. We claim every allowable amount and flag what will not survive a CRA review.
Consulting — Job-Costed Bookkeeping
Our bookkeeping is built for the trade. We cost materials, labour and subcontractors to each job, reconcile Jobber or ServiceTitan to QuickBooks Online, and tie your HST returns to the service-call and installation revenue you actually earned.
CRA Representation — Trade Audit & Payroll
When CRA questions your subcontractors, your slips or your cash deposits, we handle it: the subcontractor-versus-employee classification, the T5018 filing, the WSIB position, and the response inside CRA’s deadline so a claim is not lost on a technicality.
Bookkeeping — Growth, Financing & Bonding
We prepare the CPA-compiled statements lenders and sureties require for equipment financing and surety bonding, and model the numbers when you hire, add a second van, or buy another plumber’s book of business.
Google Reviews
Plumbing Business Clients
Plumber Tax and Accounting Services in Ontario
Corporate Tax Filing for Plumbers
Accurate T2 preparation for your plumbing corporation, with Schedule 8 CCA on the van and tools, work-in-progress and holdback, and GIFI.
Accounting & Bookkeeping for Plumbers
Job-costed bookkeeping that reconciles Jobber or ServiceTitan to QuickBooks Online, with materials, labour and subs tracked to every job.
Corporate Tax Planning for Plumbers
Salary-versus-dividend planning, protecting the $500,000 Small Business Deduction, timing equipment, and the LCGE when you sell.
Catch-Up Corporate Tax Filing for Plumbers
File overdue T2 and T5018 years, pursue penalty relief, and rebuild records from your job software with accurate catch-up support.
GST/HST Filing for Plumbers
HST returns at 13% on plumbing services, input tax credits on materials and the van, and matching to your T2, done AFFORDABLY.
Corporate Tax Cleanup for Plumbers
Fix tools expensed instead of CCA, shareholder loans on Schedule 50, subcontractor reclassification, and file the amended T2.
CRA Audit Resolution Services for Plumbers
Expert support for subcontractor-versus-employee audits, T5018 penalties, WSIB and cash-deposit reviews, and taxpayer relief.
CPA Compilation Report (Notice to Reader) for Plumbers
CSRS 4200 compiled financial statements that banks and sureties accept for equipment financing and surety bonding.
Incorporation Services for Plumbers
Incorporate your plumbing business, set up Business Number, GST, payroll and WSIB, and roll in assets under section 85.
Accounting & Tax Services Tailored for Plumbers
Real, practitioner-level CPA expertise for residential plumbers, commercial plumbing contractors, drain and sewer contractors, and gas fitters across Ontario — built for how a plumbing business actually runs.
- We prepare the T2 return for your plumbing corporation and claim capital cost allowance on Schedule 8, depreciating the Class 10 service vehicle at 30% declining balance, so CRA cannot disallow the van deduction that quietly lowers your corporate tax every single year.
- Your plumbing tools split across two CCA pools: durable pipe threaders and drain machines enter Class 8 at 20%, while small tools costing under $500 each go to Class 12 at 100%, and misfiling them overstates the taxable income you hand CRA.
- Under the Construction Act your general contractors withhold a 10% holdback, and that holdback receivable together with work-in-progress on unfinished installs must be reported on the T2, or CRA reassesses the corporation for understating year-end plumbing income.
- Plumbing corporations with gross revenue above $1 million must file the T2 electronically, so we complete the Schedule 100 GIFI balance-sheet codes and reconcile every asset and payable to your statements, because a GIFI figure contradicting the ledger fast-tracks a CRA desk review.
- We file the T2 within six months of your fiscal year-end, because a late corporate return draws a 5% penalty plus 1% per month up to twelve months, turning a slip on your parts-markup revenue into cash lost to CRA.
- We sync Jobber to QuickBooks Online so every work order flows into job costing per project, and a $6,000 repipe that looked profitable but ran three days over is exposed before you quote the next one the same way and lose money twice.
- Using ServiceTitan we split each ticket into materials versus labour versus subcontractor payments, because a plumbing business that cannot see a 45% gross margin slipping to 22% on commercial work is bleeding profit no year-end T2 will ever recover.
- We capture supplier bills through Housecall Pro and Hubdoc so every roll of PEX and every fitting is coded to the right job, protecting the input tax credits and deductions a $40,000 materials year would otherwise leak straight to CRA.
- We reconcile your bank and merchant deposits in Xero to service-call revenue and installation revenue monthly, so an emergency callout billed at $350 but never invoiced is caught while it is fixable, not discovered a year later.
- We build a plumbing chart of accounts that separates maintenance-contract income, new-construction contracts and drain-and-repair work, so your monthly statements show real margin by revenue stream instead of one blended number that hides a losing division.
- We model the salary-versus-dividend mix for the owner so your plumbing corporation keeps the 12.2% Ontario small-business rate on the first $500,000 of active income, because the wrong split can cost a profitable plumber several thousand dollars in avoidable personal tax.
- We time the purchase of a second service van or a jetter before your December 31 year-end so the Accelerated Investment Incentive delivers a full first-year CCA write-off instead of the half-year rule halving it, moving real deduction into the year you actually need it.
- Selling shares of a qualified plumbing corporation can shelter up to $1.25M of gain under the Lifetime Capital Gains Exemption, so we start the two-year purification early, because a plumber who waits for a buyer usually cannot meet the 90% active-asset test in time.
- We watch passive investment income against the $50,000 threshold, because rent or portfolio income above it grinds your Small Business Deduction dollar for dollar and can quietly push your plumbing profit from the 12.2% rate toward 26.5%.
- We put your apprentices and journeymen on a reasonable T4 wage supported by timesheets, because section 67 lets CRA deny pay above market rate, and thoughtful family-wage planning still splits income the corporation would otherwise tax at the top.
- Unfiled T2 years lock your plumbing corporation out of financing and let CRA issue an arbitrary notional assessment plus a demand-to-file penalty of 10% of the balance owing, ignoring your real materials and subcontractor costs, so we file the oldest year first with defensible numbers.
- Where you paid subcontractors but never filed the T5018 Statement of Contract Payments, we prepare every missing year before CRA finds it, because the $100-per-slip penalty compounds fast once a crew of drain subs runs into dozens of unreported slips.
- We reconstruct missing books from your plumbing job costing software export, bank deposits and supplier statements, then file an RC4288 taxpayer relief request, which can cancel penalties and grant interest relief once the back-year returns are finally accurate.
- We catch up unremitted source deductions on the PD7A for apprentice wages that were paid in cash off the books, because unfiled payroll leaves the corporation and its directors personally liable for the tax, CPP and EI that should have been withheld.
- We file every outstanding HST return for the plumbing business, because unremitted tax collected on service calls exposes the directors to personal assessment and keeps CRA holding any refund until the full back-filing, often several thousand dollars, is complete.
- Plumbing services are taxable at 13% in Ontario, and you must register the moment revenue passes the $30,000 small-supplier threshold, so we track the exact quarter you cross it and stop CRA assessing tax you never charged your customers.
- We claim input tax credits on plumbing materials cost — copper, PEX, fixtures and fittings — on every HST return, because a drain contractor buying $80,000 of supplies a year who misses these credits is overpaying CRA by more than $10,000 annually.
- We recover the HST on service-van fuel and vehicle costs at the business-use percentage, a credit most plumbers leave on the table because the personal-use split is never documented for CRA on the return.
- We reconcile the revenue on line 101 of your HST return to the sales on your T2, because CRA’s matching program compares the two and a plumbing business whose figures disagree is one of the fastest files to be selected for a review.
- Where it pays, we file the GST quick-method election for your plumbing business, remitting a flat rate below 13% on tax-included service revenue up to the $400,000 limit, which can keep a few thousand dollars of collected HST in the corporation legally each year.
- We correct prior returns where a previous preparer expensed a $9,000 hydro-jetter in full instead of adding it to the capital cost allowance pool, restoring the undepreciated balance your plumbing corporation can claim against tax every future year.
- We clean up shareholder draws recorded as expenses by posting them to the Schedule 50 shareholder loan, because a balance left outstanding past the corporation’s year-end triggers an income inclusion in your hands under subsection 15(2) that CRA will not forgive.
- We reclassify workers wrongly booked as subcontractors back to employees where the control and tools tests demand it, filing the T4s and back payroll before a CRA review turns a mislabelled helper into an assessment for CPP, EI and penalties.
- We remove personal-use vehicle costs and household items run through the plumbing books, because a single denied category during a CRA review of one year usually reopens the three prior years and multiplies the reassessment.
- We recode materials and labour that were dumped into one account and file the amended T2, so your restated gross margin finally matches reality and the corporation is not paying tax on profit it never actually made.
- When CRA runs a subcontractor-versus-employee review, we build the control, ownership-of-tools and integration analysis that decides the case, because a helper reclassified as an employee lands the plumbing corporation with back CPP, EI and payroll on every dollar paid.
- We answer WSIB premium and construction-registration audits with your payroll and subcontractor records, because a plumbing contractor found to have under-reported insurable earnings faces retroactive premiums plus penalty on the full assessed period.
- Where CRA applies indirect verification of income to a cash-heavy plumbing business, we prepare the bank-deposit and source-of-funds reconciliation that closes the gap, because unreported cash jobs expose you to the 50% gross-negligence penalty under subsection 163(2).
- We defend personal-use-of-vehicle assessments with the mileage logbook and business-use calculation, because without records CRA imposes a standby charge and operating benefit that can add several thousand dollars of taxable benefit to the owner’s return.
- We reconcile your T5018 subcontractor reporting to the amounts actually paid, because a single $40,000 sub payment that never made it onto a slip is exactly the discrepancy that turns a routine trade review into a full reassessment.
- We prepare CSRS 4200 compilation engagement financial statements for your plumbing corporation, which banks require before approving the $60,000 equipment financing on a new service truck or trailer-mounted jetter that a bare T2 will not support.
- Your compiled statements let a surety set bonding capacity for larger commercial and new-construction contracts, because no general contractor awards a $500,000 mechanical package to a plumbing business that cannot show a bondable balance sheet.
- We compile two fiscal years of the statement of operations and financial position tied to the T2 filed with CRA, giving the lender the stable revenue trend a single year of plumbing figures can never demonstrate on its own.
- We build the compiled statements on job-costed numbers so the reader sees real gross margin on installations and service work, not a blended figure, which is what lets a bank underwrite a growing plumbing contractor with confidence.
- The required CSRS 4200 communication discloses that no audit or review was performed and sets out the basis of accounting, and without it the bank and the Business Development Bank of Canada reject a plumber’s financing file outright.
- We incorporate your plumbing business under the Ontario Business Corporations Act with a NUANS search and Articles of Incorporation, giving you the limited-liability shield a sole proprietorship never provides when a burst-line water-damage claim exceeds your insurance.
- We register the CRA Business Number and open the GST/HST, payroll and WSIB accounts for the new plumbing corporation, so you can invoice general contractors, pay apprentices and remit premiums from day one without a compliance gap.
- We complete the section 85 rollover on Form T2057 to move your service van, tools, goodwill and client list into the corporation at elected amounts, deferring the capital gain and recapture a straight sale of those trade assets would trigger.
- We design common and non-voting share classes at incorporation so future dividends can flow to family and each holder’s access to the Lifetime Capital Gains Exemption is protected, provided the plumbing corporation keeps the 90% active-asset mix qualified.
- We set the first fiscal year-end up to 53 weeks after incorporation to defer the plumbing corporation’s first T2 and balance-due date, and register you for WSIB clearance so you can start billing on job sites immediately.
Plumbing Business Tax & Job-Costing Check
Six quick questions on your subcontractor slips, job costing, van and tools, payroll and whether your plumbing business is set up right. No fee shown.
1. Do you file T5018 slips for the subcontractors you pay?
2. Do you cost each job so you know its real profit?
3. Are you claiming your service van and tools in full?
4. Do you pay apprentices and journeymen on payroll?
5. Is your plumbing business incorporated?
6. Are you registered with WSIB and remitting premiums?
Free CPA Consultation for Plumbers
Case Studies: Plumbing Business Accounting & Tax
Toronto Plumbing Corporation — Job Costing & Tax Optimized
The problem: A residential and commercial plumbing corporation was running one blended profit number, remitting the full 13% HST with no quick-method review, and paying the owner entirely in salary. Two service vans and a jetter had been expensed in odd years with CCA never properly pooled on Schedule 8, and roughly $500,000 of active income was taxed with no salary-versus-dividend planning at all.
What we did: We synced Jobber to QuickBooks Online and rebuilt job costing so each division’s margin was visible, restated the Class 10 and Class 8 pools to recover missed capital cost allowance, and modelled a salary-and-dividend mix that held the 12.2% small-business rate on the first $500,000 of active income.
The result:
- Saved $23,600 per year in combined corporate and personal tax
- Recovered $8,400 of previously missed van and tool CCA
- Real margin now visible on every service call and install
Brampton Plumbing Contractor — Subcontractor & T5018 Fixed
The problem: A drain and new-construction plumbing contractor had paid a rotating crew of subcontractors for three years and never filed a single T5018 Statement of Contract Payments, exposing the corporation to the $100-per-slip penalty on dozens of slips. Two helpers were booked as subcontractors when CRA’s control and tools tests made them employees, and payroll was being run by hand on spreadsheets every week.
What we did: We prepared and filed all outstanding T5018 returns, filed an RC4288 taxpayer relief request on the penalties, reclassified the two helpers to employees with proper T4s and back payroll, and moved the plumbing business onto Wagepoint so apprentice and journeyman pay, CPP, EI and WSIB run automatically.
The result:
- All T5018 penalties cancelled under RC4288
- Subcontractor-versus-employee exposure fully resolved
- Cut weekly payroll work by 5 hours through Wagepoint
Mississauga Drain Company — Van & Tool CCA Recovered
The problem: A drain and sewer company had a previous preparer who expensed a $9,000 hydro-jetter and a $52,000 service van in full in the wrong years, claimed no work-in-progress or holdback on the T2, and had shareholder draws sitting in an expense account instead of the Schedule 50 shareholder loan — a subsection 15(2) income inclusion waiting to happen.
What we did: We rebuilt the Class 10 and Class 8 capital cost allowance pools to recover the undepreciated balance, posted the draws to the shareholder loan and cleared it before year-end, reported work-in-progress and the 10% holdback receivable correctly, and filed the amended T2 for the affected years.
The result:
- Saved $17,900 in tax through recovered CCA and corrections
- Cleared a $34,000 shareholder-loan inclusion before it was assessed
- T2 now reports WIP and holdback correctly every year
Our clear, efficient process ensures every step is transparent, building trust and long-term client relationships.
Kickoff (Document Request)
Collect your prior T2, job-software export, subcontractor list, WSIB account, bank statements and prior HST filings.
First 30 Days (Setup)
Integrate QuickBooks Online or Xero with Jobber or ServiceTitan, build a job-costing chart of accounts, and set up subcontractor and T5018 tracking.
Monthly Close
Monthly reconciliations, receipt capture, HST tracking, job-cost review and subcontractor payment logging.
Quarterly Planning Review
Salary-versus-dividend, HST position, equipment timing, and work-in-progress and holdback review.
Year-End Close & T2 + T5018 Filing
Trial balance, financial statements, T2 with GIFI, T5018 slips, and CRA preparation.
Get Your Plumbing Business Taxes Done Right Today
We believe in clear, upfront pricing so you know exactly what to expect. All fees include HST.
- Tax Preparation (Corporation) — From $400
- Tax Return Filing (Corporation) — From $400
- Tax Compliance Audit — FREE CRA audit support for our clients
- Tax Strategy — FREE for our clients
- Accounting Base Plan — From $100 per month
- Bookkeeping Management — Free for our Accounting clients
- Financial Reporting — Free for our Accounting clients
- Business Formation — Flat $35
- Incorporation Process — Flat $35
- Entity Setup Assistance — Flat $35
- Full-Service Payroll — From $125 per month
Payment is by Interac e-Transfer to info@gondaliyacpa.ca only. Security question: Not Applicable, as auto-deposit is enabled.
Meet Your Lead Plumbing Business Accountant
Meet your lead plumbing business accountant. As your trade tax and accounting adviser, you deal with the same two people every year.
What Our Clients Say
1300+ five-star reviews from plumbers, contractors and small-business owners across Ontario and Canada.
Serving Plumbers Across Ontario
Our CPA team provides specialized accounting and tax solutions for plumbing businesses throughout Ontario. We understand how a plumbing contractor actually operates, what CRA and WSIB look at on a trade file, and how to cost jobs, file T5018 slips and claim the van and tools so your corporation keeps more of what it earns.
Toronto (ON)
55 Queen St E Ste 1205, Toronto, ON M5C 1R6, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Mississauga (ON)
2100 Camilla Rd #716, Mississauga, ON L5A 2J8
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Brampton (ON)
4 Starhill Crescent, Brampton, ON L6R 2P9, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Scarborough (ON)
24 Clementine Square, Scarborough, ON M1G 2V7, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Vaughan (ON)
19 Cabinet Crescent, Woodbridge, ON L4L 6H9, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Oshawa (ON)
210 Durham St, Oshawa, ON L1J 5R3, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Ottawa (ON)
2090 Neepawa Ave a314, Ottawa, ON K2A 3L6, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Etobicoke (ON)
60 Stevenson Rd #1601, Etobicoke, ON M9V 2B4, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Hamilton (ON)
70 Starling Dr, Hamilton, ON L9A 0C5, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Guelph (ON)
1155 Gordon St, Guelph, ON N1L 1S8, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Windsor (ON)
4387 Guppy Ct, Windsor, ON N9G 2N8, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
North York (ON)
150 Graydon Hall Dr #912, North York, ON M3A 3B2, Canada
+1 (647) 212-9559
9:00 AM – 8:30 PM (Mon – Sun)
Plumbing Business Accounting & Tax FAQs
Related Industries We Serve
Accountant for Incorporated Businesses
- T2 corporate tax filing and planning
- Salary-versus-dividend optimization
- Financial statements and bookkeeping
Accountant for Sole Proprietors
- T2125 filing and CRA compliance
- HST registration and Quick Method
- Incorporation break-even planning
Accounting & Tax Services for Small Businesses
- Corporate tax planning for small businesses
- Payroll and bookkeeping services
- Financial statements and compliance
Accounting for Self-Employed
- Tax planning for self-employed individuals
- T2125 filing and HST support
- Bookkeeping and deduction reviews
Plumbing Business Accounting & Tax Done Right.
T2 and T5018 filing, job costing, service-van and tool CCA, HST, WSIB, payroll, holdback and work-in-progress, and the incorporation and sale decisions under one roof. AFFORDABLE flat fees, no hourly billing. Licensed CPA Ontario. 1300+ five-star reviews. 30-Day Money-Back Guarantee.