Accountant for Sole Proprietors in Ontario: Pay Less Tax, File Right
We handle your T2125, HST filings, and self-employed CPP, so you can focus on the work that actually pays you. From freelancers and independent contractors to tradespeople, consultants and e-commerce sellers, we keep your books clean, claim every home-office, vehicle and equipment dollar, and tell you the exact profit level where incorporating starts to save you tax — with AFFORDABLE flat fees.
AFFORDABLE Sole Proprietor Tax Accountant
Running a business as a sole proprietor means every dollar of profit lands on your personal return at your personal rate, and every mistake on Form T2125 lands on you personally too. There is no corporate shield, no salary and dividend split, and no third-party slip telling CRA what you earned. That is why you need a trusted sole proprietor accountant in Ontario. At Gondaliya CPA, we specialize in T2125 preparation, GST/HST filing for sole proprietors, and self-employed CPP planning, providing AFFORDABLE flat-fee support that keeps you CRA-compliant and stops you paying more tax than you owe.
As experienced accountants for sole proprietors, we work with freelancers, independent contractors, tradespeople, consultants, and e-commerce sellers across Ontario. We tell you plainly what you can deduct, what you cannot, and the exact net profit level where incorporating starts putting money back in your pocket.
Let us handle the numbers so you can focus on the work that actually pays you.
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Accounting That Understands How a Sole Proprietorship Actually Works
Running a business in your own name comes with financial pressures an incorporated owner never faces. Your business debts are your personal debts, you pay both halves of CPP, and your profit is taxed at your full personal rate with no place to leave it. At Gondaliya CPA, we understand the financial reality of an unincorporated business and provide practical, sole-proprietor-focused solutions across the GTA and all of Ontario.
Stay Compliant and Minimize Your Sole Proprietor Tax
For a self-employed owner, staying onside with CRA and paying the least legal tax are the same job. We keep every filing on schedule while claiming every deduction the T2125 allows, so nothing is missed and nothing invites a reassessment.
Accounting & Tax Experts for Sole Proprietors
- AFFORDABLE + Fully Registered 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 Sole Proprietors?
Tax Planning — Sole Proprietor Expertise
We know the deductions that carry an unincorporated business: motor vehicle at your logbook percentage, business-use-of-home on square footage, tools and equipment across the right CCA classes. We claim every allowable amount and we tell you which ones will not survive a CRA review.
Consulting — End-to-End Bookkeeping & HST
Our bookkeeping is built for one-person businesses. We separate commingled bank activity, reconcile Stripe, Square, and Shopify payouts to gross sales, and tie your GST/HST returns to the revenue you report on Form T2125.
CRA Representation — Audit & Objection Support
When CRA questions your vehicle claim, your home office, or a run of business losses, we prepare the response, file the Notice of Objection on Form T400A within the 90-day window, and pursue relief on Form RC4288 where penalties came from someone else’s error.
Bookkeeping — Incorporation Readiness
We model the exact profit level where incorporating pays for itself, then handle the section 85 rollover on Form T2057 so your equipment, goodwill, and client list move across without triggering tax.
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Sole Proprietor Clients
Sole Proprietor Tax and Accounting Services in Ontario
Business Tax Filing for Sole Proprietors
Professional Form T2125 preparation and T1 filing, ensuring accuracy and CRA compliance on every business line.
Accounting & Bookkeeping for Sole Proprietors
Reliable bookkeeping with financial statements, clean records, and monthly reporting built for a one-person business.
Tax Planning for Sole Proprietors
Smart tax planning to reduce personal tax, manage CPP, and time the move to incorporation.
Catch-Up Tax Filing for Sole Proprietors
File overdue returns, rebuild missing records, and get back into CRA compliance with accurate catch-up filing support.
GST/HST Filing for Sole Proprietors
AFFORDABLE GST/HST filing with Quick Method analysis to help you remit less, legally, and avoid CRA penalties.
Tax Cleanup for Sole Proprietors
Resolve prior-year errors through adjustment requests and bring every filing fully compliant and up to date.
CRA Audit Resolution Services for Sole Proprietors
Expert support to handle CRA audits, reviews, objections, and negotiations with confidence.
CPA Compilation Report (Notice to Reader) for Sole Proprietors
CPA-compiled financial statements that mortgage lenders and banks accept when a T4 slip does not exist.
Incorporation Services for Sole Proprietors
Full incorporation including NUANS, articles, share structure, and the section 85 rollover of your existing business.
Accounting & Tax Services Tailored for Sole Proprietors
Real, practitioner-level CPA expertise for freelancers, independent contractors, tradespeople, consultants, and e-commerce sellers across Ontario — built for how an unincorporated business actually runs.
- We prepare Form T2125 Statement of Business or Professional Activities on your T1 return with gross revenue, cost of goods sold, and each expense reported on its correct line, so CRA’s automated review does not flag your sole proprietorship for a desk audit.
- Your self-employed CPP runs at 11.9% on net business income between $3,500 and $74,600 for 2026, a maximum of $8,460.90, plus 8% CPP2 to $85,000 — we calculate it on Schedule 8 so the balance owing is never a surprise.
- Sole proprietors file by June 15 but any balance owing is due April 30, so we complete your T2125 before April and CRA interest never starts running on a return it still treats as filed on time.
- We claim motor vehicle costs in Part 8 of Form T2125 at your logbook business-use percentage, with Class 10.1 capped at the $39,000 ceiling for 2026 acquisitions and loan interest limited to $350 per month, so a CRA vehicle review cannot disallow the whole claim.
- We complete the business-use-of-home calculation in Part 7 of Form T2125 on a square-footage basis and carry forward indefinitely any amount that cannot create a business loss, so the unused portion of your home office claim is never lost to CRA.
- We separate business and personal activity inside a single commingled bank account by tagging every line in QuickBooks Online or Xero, because CRA treats a mixed account as an open invitation to review your entire Form T2125.
- We reconcile your Stripe, Square, and Shopify payouts against gross sales on Form T2125 rather than net deposits, so the platform fees withheld before payout are captured as a deduction instead of silently shrinking your reported revenue.
- We capture receipts through Hubdoc or Dext and attach them to each transaction, giving you the six years of records section 230 of the Income Tax Act requires without keeping a shoebox that fails the moment CRA asks.
- We track subcontractor payments separately and prepare T5018 Contract Payment Reporting slips where your sole proprietorship works in construction, avoiding the $100 per slip penalty CRA applies to late or missing filings.
- We build your chart of accounts in QuickBooks Online mapped directly to the T2125 expense lines, so year-end filing is a clean transfer instead of a reclassification exercise that costs you extra fees every single year.
- Ontario’s top personal marginal rate reaches 53.53% while a CCPC pays 12.2% on the first $500,000 of active income under the Small Business Deduction — we model the exact net profit level where staying a sole proprietor starts costing you real money.
- The $1.25M Lifetime Capital Gains Exemption applies only to shares of a qualified small business corporation, so your sole proprietorship goodwill and client list currently attract full tax on sale — we plan the conversion years before a buyer appears.
- We pay a reasonable salary to your spouse for work actually performed, supported by timesheets and market-rate evidence, because section 67 of the Income Tax Act lets CRA deny any amount above what an arm’s length person would have been paid.
- We time equipment purchases before your December 31 year-end so the Accelerated Investment Incentive gives a full first-year CCA claim on Class 8 tools and Class 50 computers, instead of the half-year rule cutting your first-year deduction in half.
- We calculate RRSP room at 18% of prior-year earned income to the 2026 limit of $33,810 and claim it on Schedule 7, timing the contribution to pull net business income below the next Ontario bracket, since a sole proprietor has no salary or dividend lever to pull.
- Unfiled T1 returns carrying business income lock your CRA My Account, block mortgage approval, and freeze Canada Child Benefit payments — we file every outstanding year with a complete Form T2125 to restore your benefit entitlement.
- Late T1 filing penalties run at 5% of the balance owing plus 1% per month to 12 months, rising to 10% plus 2% per month to 20 months once CRA has issued a demand, so we file the oldest year first to stop the compounding.
- We reconstruct missing sole proprietorship revenue from bank deposits, e-transfer records, and Stripe or Square payout statements where no bookkeeping exists, then prepare a defensible T2125 for each unfiled year instead of guessing at round numbers.
- We file the Voluntary Disclosures Program application on Form RC199 before CRA contacts you, because a disclosure accepted under the general program cancels penalties in full and gives 50% interest relief on years preceding the three most recent.
- We recover missed CCA on tools, vehicles, and computer equipment across every unfiled year, because a catch-up filing that reports income and ignores the undepreciated capital cost pool hands CRA more tax than you actually owe.
- You stop being a small supplier the moment taxable revenue passes $30,000 in a single calendar quarter or across four consecutive quarters, and we track the exact day you cross so CRA cannot assess you on tax you never collected from customers.
- We file the Form GST74 Quick Method election with CRA where your sole proprietorship supplies services in Ontario, remitting 8.8% of HST-included revenue instead of 13% less input tax credits, with a 1% credit on the first $30,000 each year.
- Quick Method eligibility ends once annual taxable supplies pass $400,000, and claiming operating input tax credits on top of the flat rate is double-dipping that CRA reverses with interest, so we monitor both positions every filing period.
- We claim input tax credits on the business-use portion of home internet, cell phone, and vehicle costs at the 13% Ontario rate on line 108 of your GST/HST return, a recovery most sole proprietors miss because the personal split is never documented.
- We match the revenue on line 101 of your GST/HST return to gross sales on Form T2125, because CRA’s matching program compares the two and a difference is one of the fastest ways an unincorporated business gets selected for audit.
- We correct prior-year T2125 returns through Form T1-ADJ where a previous preparer expensed capital items such as tools, trailers, and computers instead of adding them to Class 8 at 20%, Class 10 at 30%, and Class 50 at 55%, restoring the undepreciated capital cost you can claim every future year.
- We fix home office claims taken at 100% of household costs, reducing them to the defensible square-footage percentage before CRA does it for you and adds the gross negligence penalty of 50% under subsection 163(2).
- We reclassify personal costs run through the business — family vehicle use, personal meals, home renovations — because a single denied category during a CRA review usually opens a full reassessment of the three prior years.
- We rebuild the motor vehicle logbook and business-use percentage for prior years using calendar entries, client invoices, and mileage app history, so an amended Part 8 claim survives the CRA request for records inside the normal three-year reassessment period.
- We correct GST/HST returns where input tax credits were claimed on exempt or personal purchases, filing the adjustment before the four-year assessment window closes rather than waiting for CRA to find it and add interest on top.
- Where CRA challenges consecutive business losses, we build the reasonable expectation of profit argument set out in Stewart v Canada using your business plan, revenue trend, and evidence of commercial activity to defend the T2125 deductions.
- CRA applies indirect verification of income to cash-intensive sole proprietorships, comparing deposits and lifestyle against reported revenue, so we prepare the source and application of funds reconciliation that closes the gap on paper before it closes on you.
- We answer CRA vehicle expense reviews with the logbook, odometer records, and business-use calculation in one package inside the 30-day query letter deadline, because a claim disallowed for missing records cannot be restored later at the objection stage.
- We file the Notice of Objection on Form T400A within 90 days of the date on the CRA notice of reassessment, since missing that deadline leaves only a discretionary extension application and removes your right to the Tax Court of Canada.
- We submit RC4288 Taxpayer Relief applications for penalties and interest caused by a prior accountant’s error or documented hardship, covering the ten calendar years preceding the request with the chronology CRA requires to exercise its discretion.
- We prepare CSRS 4200 compilation engagement financial statements for your sole proprietorship, which mortgage lenders and banks require when self-employment income cannot be verified with a T4 slip and two years of T1 returns are not enough on their own.
- Your compiled statement of financial position shows business assets at net book value, accounts receivable, and the owner’s capital account for the two most recent fiscal years, giving a lender the picture a bare Form T2125 page cannot provide.
- We compile the statement of operations with revenue, cost of sales, and operating expenses classified consistently across two fiscal years and tied to the T2125 filed with CRA, so a lender sees a stable trend rather than reclassified noise.
- The required CSRS 4200 communication discloses that no audit or review has been performed, and the notes set out the basis of accounting and any owner withdrawals — without both, banks and the Business Development Bank of Canada reject the file.
- We deliver compiled statements within 30 days of receiving your complete records and the year’s T2125 figures, because self-employed mortgage and equipment-financing applications collapse when the lender’s conditional approval expires before the accountant produces the file.
- We incorporate under the Ontario Business Corporations Act with a NUANS name search and Articles of Incorporation, replacing the Business Names Act registration that renews every five years and gives your sole proprietorship no protection at all on business debts or lawsuits.
- We complete the section 85 rollover on Form T2057 to move equipment, goodwill, and your client list into the new corporation at elected amounts, deferring the capital gain and recapture that a straight sale of those assets would trigger.
- We design common voting and non-voting share classes at incorporation so dividends can later be paid to family shareholders and the $1.25M Lifetime Capital Gains Exemption can be multiplied on qualified small business corporation shares at sale.
- We register the CRA Business Number, GST/HST account, and payroll account for the new corporation and close or transfer the sole proprietorship accounts, so you never file two sets of returns reporting the same revenue twice.
- We prepare the opening balance sheet, minute book, director resolutions, and share certificates, and set the first fiscal year-end up to 53 weeks after incorporation, deferring the corporation’s first T2 filing and CRA balance-due date.
Sole Proprietor Tax & Incorporation Check
Six quick questions on your self-employed revenue, deductions, instalments and whether it is time to incorporate. No fee shown.
1. Is your annual self-employment revenue over $30,000?
2. Are you claiming business-use-of-home expenses each year?
3. Do you use a vehicle for your business and track mileage?
4. Is your net profit approaching or above $100,000?
5. Do you pay CRA tax instalments (net tax over $3,000)?
6. Do personal and business transactions sometimes run through the same account?
Free CPA Consultation for Sole Proprietors
Case Studies: Sole Proprietor Accounting & Tax
Toronto Consultant — Quick Method & Incorporation
The problem: The client was a self-employed consultant filing Form T2125 through a DIY tax program, remitting the full 13% HST on every invoice with no thought to the Quick Method, and paying personal tax at Ontario’s top 53.53% rate on profit that had grown well beyond what they needed to draw. Two earlier years had gone out with capital purchases expensed in full and CCA never claimed, and there was no plan for the surplus piling up in the business.
What we did: We filed the Form GST74 Quick Method election so HST was remitted at 8.8% of tax-included service revenue instead of 13%, corrected the two prior years through Form T1-ADJ to restore the missed capital cost allowance, and — once we modelled the break-even — incorporated the practice and moved the assets across on a section 85 rollover so no gain was triggered on the transfer.
The result:
- Saved $19,400 per year in combined tax and HST
- Recovered $6,100 of previously missed CCA
- Cut year-end preparation time by 11 hours
Hamilton Contractor — Bookkeeping & Subcontractor Compliance
The problem: A trades contractor was running the entire business through one commingled bank account, kept no vehicle logbook, and had three years of T5018 Contract Payment Reporting slips for subcontractors that were never filed — each one an exposure to CRA’s $100-per-slip penalty and a red flag on any review of the T2125.
What we did: We rebuilt the books in QuickBooks Online with Dext capturing every receipt, separated business from personal activity line by line, filed all outstanding T5018 returns, and reconstructed the vehicle logbook from calendar entries, job sites and invoices so the business-use percentage in Part 8 of Form T2125 would hold up on review.
The result:
- All T5018 penalties cancelled under Form RC4288
- Reduced bookkeeping time by 7 hours per week
- Vehicle claim of $11,300 fully supported on CRA review
Mississauga E-commerce Seller — Revenue Reconciliation & Tax Cleanup
The problem: An online seller was booking Shopify and Stripe payouts as net deposits, which quietly understated both gross revenue and the platform fees that should have been claimed as a deduction, and left line 101 of the GST/HST return out of step with gross sales on Form T2125 — exactly the mismatch CRA’s matching program flags for review.
What we did: We reconciled three years of gross platform sales against every payout, restated revenue and the merchant-fee deductions, corrected the returns through Form T1-ADJ, and aligned line 101 of each GST/HST return to T2125 gross sales so the two finally agree.
The result:
- Saved $14,200 per year in tax after correct expense recognition
- Closed a $38,900 revenue mismatch before CRA matching flagged it
- Reduced monthly bookkeeping time by 9 hours
Our clear, efficient process ensures every step is transparent, building trust and long-term client relationships.
Kickoff (Document Request)
Collect bank statements, invoices, prior T1 returns, GST/HST filings, and your Master Business Licence.
First 30 Days (Cleanup & Setup)
Separate business from personal activity, set up QuickBooks Online or Xero with Hubdoc, and confirm your HST registration position.
Monthly Close
Monthly reconciliations, receipt capture, HST tracking, and subcontractor payment logging.
Quarterly Planning Review
Instalment review against the $3,000 threshold, CPP projection, and incorporation break-even check.
Year-End Close & T2125 Filing
Trial balance, financial statements, Form T2125, T1 filing, and CRA preparation.
Get Your Sole Proprietor Taxes Done Right Today
Affordable Pricing for Sole Proprietors
We believe in clear, upfront pricing so you know exactly what to expect. All fees include HST.
- Tax Preparation (Sole Proprietor, T2125) — From $400
- Tax Return Filing (T1 with business income) — 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.
Read our Pricing Transparency Promise — full and final flat fees, HST included, shown in 2 minutes.
Meet Your Lead Sole Proprietor Accountant
Meet your lead sole proprietor accountant. As your self-employment and small-business tax adviser, you deal with the same two people every year.
What Our Clients Say
1300+ five-star reviews from self-employed and small-business owners across Ontario and Canada.
Serving Sole Proprietors Across Ontario
Our CPA team provides specialized accounting and tax solutions for unincorporated business owners throughout Ontario. We understand how a one-person business actually operates, what CRA looks at on a self-reported return, and when incorporating stops being optional.
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)
Sole Proprietor Accounting & Tax FAQs
Related Industries We Serve
Accounting for Self-Employed
- Tax planning for self-employed individuals
- T2125 filing and CRA compliance
- Bookkeeping and HST support
Accounting for Small Businesses
- Corporate tax planning for small businesses
- Business tax filing and financial statements
- Payroll and bookkeeping services
Accounting for Consultants
- Tax planning for independent consultants
- Quick Method HST analysis
- Incorporation and tax structuring
Accounting for Startups
- Corporate tax planning for startups
- Incorporation and entity setup
- Bookkeeping and compliance from day one
Sole Proprietor Accounting & Tax Done Right.
T1 and T2125 filing, home-office, vehicle and equipment deductions, HST registration and Quick Method, CPP, instalments and the incorporation decision under one roof. AFFORDABLE flat fees, no hourly billing. Registered CPA Ontario. 1300+ five-star reviews. 30-Day Money-Back Guarantee.