Markham Construction Accounting: A Guide for Contractors & Trades

Page summary

A practical accounting guide for Markham contractors and sub-trades: job costing, revenue recognition, Ontario Construction Act holdbacks, HST on residential vs renovation work, T4A reporting for subs, WSIB, and equipment write-offs.

• Article details: Industries; published May 10, 2026; 9 min read.
• If you run a construction business in Markham — whether you are a general contractor, an electrician, or a framing crew incorporated last year — your accounting needs are structurally different from a retail shop or a professional services firm. Project cycles are long, revenue comes in lumps, sub-trade relationships carry compliance obligations most operators underestimate, and the holdback trap catches businesses that have been around for decades.
• This guide covers the accounting and tax issues that matter most for Markham contractors and trades. Where situations get fact-specific, ARMalik's Markham accounting team works with construction clients across York Region year-round.
• Why Construction Accounting Is Different — Long-Cycle Projects, Job Costing, Holdbacks
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• This article is for general informational purposes and does not constitute professional tax or accounting advice. Tax rules change and individual circumstances vary. Consult a qualified CPA before making decisions based on the information in this guide.

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• Blog: Browse more Canadian tax and accounting articles.
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• Contact ARMalik: Ask a Markham CPA about how this topic applies to your situation.

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