--- title: "Construction Accounting Markham | Trades and Contractors" url: https://www.everstonecpa.com/trades-accountant-markham description: "Construction accounting in Markham for trades: HST on progress billings, WSIB for owners, holdbacks and T5018 slips, all handled online. Get a fixed quote." updated: 2026-10-16 publisher: EverStone CPA Inc. (Chartered Professional Accountant firm, Abbotsford, BC) service_area: British Columbia, Alberta, Ontario and Manitoba --- [Home](https://www.everstonecpa.com/) [Trades accounting](https://www.everstonecpa.com/contractor-accountant) Markham Trades & construction · Markham # Trades accountant in *Markham* Ontario construction runs on its own rails: one harmonized tax on every invoice, compulsory workplace coverage that reaches the owner personally, and a statute that sets holdback and payment deadlines. For a Markham contractor, those rules shape the books as much as the jobs do. EverStone is a [CPA for incorporated contractors](https://www.everstonecpa.com/contractor-accountant) and a [Markham small-business accountant](https://www.everstonecpa.com/accountant-markham), working online. [Get My Fixed Quote](https://www.everstonecpa.com/book-online)[Ask a Free Question](https://www.everstonecpa.com/quick-question) **Quick answer:** Trades companies in Markham, Ontario charge a single 13% HST rather than separate federal and provincial taxes. Compulsory WSIB coverage extends to owners in construction. Statutory holdback and prompt payment obligations apply to the work. EverStone prepares the corporate return, HST filings and T5018 slips online. For a Markham contractor, published fees start at $300 a month for bookkeeping and $100 for a personal return. For a one-owner Markham trades business, monthly bookkeeping, payroll and the year-end T2 with statements usually cost from $450 to $650 a month all-in. The year-end covers the T2 with Schedule 1 and Schedule 50, the CCA schedule, the small business deduction, T4 or T5 slips for the owner’s pay, and the instalments for the year ahead. ## The work Markham contractors do Markham is one of York Region’s nine local municipalities, in the heart of the Greater Toronto Area, alongside Richmond Hill, Whitchurch-Stouffville and Vaughan. The trades businesses we work with here are mostly owner-run: renovation and custom-home builders, electricians, plumbers and HVAC contractors, flooring and finishing trades, landscapers, and the firms that fit out offices, labs and light-industrial space for the technology, life sciences and manufacturing employers the City lists among its key sectors. Many work on both sides of the region boundary, and some take subcontracts from larger general contractors across the GTA. That mix matters for the accounting. A renovation contractor working directly for homeowners deals with deposits, change orders and a WSIB exception that may or may not apply. A commercial subtrade deals with holdbacks, progress draws, proper invoices and payment terms set by the general contractor. A trade with a fleet of vans and expensive equipment lives on its CCA schedule and its vehicle logs. We set the books up around which of those you are. ## One tax on the invoice, and the cash it creates Ontario applies a single [13% harmonized sales tax](https://www.everstonecpa.com/ontario-tax-facts) rather than a federal tax plus a separate provincial one. That is a genuine simplification: a Markham contractor does not have to decide whether a provincial sales tax is a cost buried in materials or a line on the invoice. The tax is charged on the supply and recovered on the inputs through input tax credits. What replaces that question is a cash question. The full 13% is collected on progress billings and deposits, and remitted only when the return is due. Between remittances the contractor holds a significant amount of tax money, and money held is money that gets spent unless the process prevents it. A separate bank account for HST, or a monthly transfer equal to the net tax on the period’s billings, solves it. See the [input tax credits guide](https://www.everstonecpa.com/blog/input-tax-credits-itc-canada-guide). ## Compulsory coverage reaches the owner Ontario extends mandatory workplace insurance coverage into construction at the ownership level. Under the province’s expanded compulsory coverage rules, independent operators, sole proprietors, partners and executive officers of corporations carrying on business in construction generally must register with the WSIB and carry coverage. The exceptions are limited; the notable one is a business that does only home renovation work for a homeowner who hires and pays it directly. Employees always require coverage. For an owner-operator, this is the obligation most commonly missed, because in many other lines of work an owner without employees has nothing to register. General contractors will also ask subtrades for a WSIB clearance before paying, so a lapse can hold up money as well as create a liability. ## Statutory holdback and a payment clock Ontario’s construction legislation requires a portion of the contract price to be held back on a project. It also sets prompt payment obligations that follow a proper invoice, and provides for adjudication of payment disputes. The accounting effect of holdback is the same as anywhere: earned revenue that is not yet collectible sits in receivables, and holdbacks retained from your own subtrades are costs already incurred that belong in the period the work happened. Our [construction holdbacks guide](https://www.everstonecpa.com/blog/construction-holdbacks-accounting-canada) covers the entries. The effect of the payment rules is specific: the invoice, and what makes it a proper one, becomes the event that starts a clock. Billing that was merely untidy becomes billing that delays cash. For a Markham subtrade waiting on a general contractor, invoice discipline is a working-capital issue rather than an administrative one. ## Subtrade reporting is federal, and applies here too The **[T5018](https://www.everstonecpa.com/blog/t5018-subcontractor-reporting-construction)** requirement is federal, so a Markham construction business that pays others for construction services reports those payments to the CRA. Many trades use a long tail of small subcontractors, which makes the underlying question — is this a subcontractor or an employee — more live, not less. The factors that decide it are control, ownership of tools, the ability to subcontract and the chance of profit or loss, and the consequences of guessing wrong land on the payer as unremitted CPP, EI and income tax. ## Vehicles, tools and CCA Trucks, vans, trailers and equipment are usually a contractor’s largest purchases. Larger items are capitalized and claimed through CCA rather than expensed, and the timing of a purchase around year-end changes the first-year claim. A vehicle used partly for personal driving needs a log separating business from personal kilometres; without one the claim is exposed, and a company-owned vehicle used personally can create a taxable benefit for the owner. [Vehicle and mileage deductions](https://www.everstonecpa.com/blog/vehicle-mileage-deductions-canada-business) covers the rules. ## Instalments, seasonality and a compressed build window Exterior trades in York Region lose time to winter, and even interior trades see work bunch up around spring and summer. Revenue arrives unevenly while tax obligations arrive on a calendar. [Corporate instalments](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/corporations/corporation-payments/paying-instalments.html) set from a prior-year formula routinely mismatch a construction company’s cash. A strong season can create both a large [balance owing](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/corporations/corporation-payments.html) and an instalment schedule that starts before the next season’s receivables arrive. Modelling that in autumn is straightforward; discovering it in spring is not. See [corporate tax instalments](https://www.everstonecpa.com/blog/corporate-tax-installments-canada). ## What is covered One Chartered Professional Accountant handles the whole file: - T2 corporate return and year-end financial statements - HST registration, filing and input tax credit reconciliation - Statutory holdback schedules, receivable and payable sides - T5018 information returns and worker classification review - Job-costed bookkeeping and progress billing cut-off - Vehicle logs, CCA planning and owner pay - Instalment planning built around the actual draw calendar ## Remote, with no office in Markham EverStone has no Markham location. Engagements run entirely online: video meetings, e-signature and secure document exchange, with receipts sent from a phone at the job site. Corporate tax is federal law with a provincial layer, so the work is not tied to a postcode. See [accounting for Ontario businesses](https://www.everstonecpa.com/accountant-ontario), or [our Toronto accountant page](https://www.everstonecpa.com/accountant-toronto) for the nearest large city. About this article **EverStone CPA** Prepared and reviewed by a Chartered Professional Accountant at EverStone CPA, a CPA firm working with small and midsized businesses in BC, Alberta, Ontario and Manitoba. Updated October 2026 . [About the firm](https://www.everstonecpa.com/about) ## What a trades business has to get right What a trades business has to get right The items that decide a trades year-end — for a business operating in Markham, Ontario | Item | Why it matters | | Subcontractor payments | Construction payers report subcontractor payments to the CRA on a T5018 | | Holdbacks | Amounts held back under a construction contract are recognized on their own timing, not when invoiced | | Tools and equipment | Larger purchases are capitalized and depreciated rather than expensed in full | | Vehicle use | A log separating business from personal kilometres is what supports the claim | | Sales tax where you operate | 13% HST, a single registration and a single return | Source: [Construction and trades accounting](https://www.everstonecpa.com/construction-trades-accounting). General information, not advice. Other services for Markham businesses: [personal tax](https://www.everstonecpa.com/personal-tax-accountant-markham). Common questions ## Markham trades accounting FAQ **Do Markham contractors charge HST on construction work?** Yes. Ontario applies a single 13% harmonized tax on the supply, and registrants recover the tax paid on inputs. The practical issue is cash: more tax money is held between remittances, so it should be set aside as it is collected. [Ask about your case →](https://www.everstonecpa.com/quick-question) **Does an owner-operator in Ontario construction need WSIB coverage?** Generally yes. Ontario’s compulsory coverage rules extend to independent operators, sole proprietors, partners and executive officers carrying on business in construction. A limited exception covers businesses doing only home renovation work for a homeowner who hires and pays them directly. Employees always require coverage. **What does the statutory holdback do to the books?** It creates earned revenue that is not yet collectible, and costs already incurred where you hold back from your own subtrades. Both belong in the period the work was performed; deferring either to the release date misstates the job margin. **Why does invoice quality matter more in Ontario?** Because the province’s construction legislation ties prompt payment obligations to a proper invoice, so the document itself starts a timeline and can support an adjudication if payment does not follow. **Do T5018 slips apply in Ontario?** Yes. The requirement is federal, so the province makes no difference. A construction business that pays others for construction services generally reports those payments. **Can you handle a Markham contractor entirely online?** Yes. The engagement runs by video, e-signature and secure upload, and there is no office in Markham. What matters is that the T2, the HST filings and the job records are prepared from one consistent set of books. **Do you work with trades outside Markham itself?** Yes. Trades businesses in Unionville, Richmond Hill, Whitchurch-Stouffville and the rest of York Region are served the same way, online and at the same fixed fees. [See the published fees](https://www.everstonecpa.com/pricing). More Markham services [Accountant in Markham](https://www.everstonecpa.com/accountant-markham) · [Corporate tax (T2) in Markham](https://www.everstonecpa.com/corporate-tax-accountant-markham) · [Personal tax (T1) in Markham](https://www.everstonecpa.com/personal-tax-accountant-markham) · [Bookkeeping in Markham](https://www.everstonecpa.com/bookkeeping-markham) · [Payroll in Markham](https://www.everstonecpa.com/payroll-services-markham) · [GST/HST filing in Markham](https://www.everstonecpa.com/gst-hst-filing-markham) · [Financial statements in Markham](https://www.everstonecpa.com/financial-statements-markham) · [Fractional CFO in Markham](https://www.everstonecpa.com/cfo-services-markham) · [Tech startup accounting in Markham](https://www.everstonecpa.com/tech-startup-accountant-markham) ## Related services and local guides The rest of what we do for Markham businesses, nearby cities, and the reference pages behind this one. [Construction and trades accounting Job costing, holdbacks, progress billing and subcontractor reporting.](https://www.everstonecpa.com/construction-trades-accounting) [Accountant for contractors Incorporation timing, HST registration and the vehicle log.](https://www.everstonecpa.com/contractor-accountant) [Trades accounting in Toronto The same trades engagement, serving Toronto](https://www.everstonecpa.com/trades-accountant-toronto) [T5018 subcontractor reporting Who files, what counts and when it is due](https://www.everstonecpa.com/blog/t5018-subcontractor-reporting-construction) [Accountants across Ontario Remote CPA service throughout Ontario](https://www.everstonecpa.com/accountant-ontario) [Ontario tax facts Current rates and thresholds for Ontario](https://www.everstonecpa.com/ontario-tax-facts) ## Building in Markham? Corporate tax, HST, subtrade slips and holdback timing handled by one CPA who works in construction. Send an enquiry. [Get My Fixed Quote](https://www.everstonecpa.com/book-online)[Ask a Free Question](https://www.everstonecpa.com/quick-question) ★★★★★ “…He is very knowledgeable and has saved me tons in taxes by restructuring my group of companies — the best accountant I've worked with in the last 10 years, after switching from three different firms.” Matt Hildebrandt · Google review --- Source: https://www.everstonecpa.com/trades-accountant-markham Contact: info@everstonecpa.com · https://www.everstonecpa.com/book-online