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Ontario CPA Resource Centre — Updated 2025

Best CPAs & Tax Accountants
in Ontario — Expert-Verified Guide

Ontario's most complete practitioner-written resource on CPA firms, tax filing, SR&ED credits, incorporation, payroll, and CRA compliance. Every guide is written by an industry expert with 12+ years serving Ontario corporations.

50+
Expert Guides
12+
Years Practice
Corporate Tax GST/HST Incorporation SR&ED Bookkeeping Payroll CRA Audit International Estate & Trust Specialty & Cleanup City Guides

Finding the right CPA in Ontario means finding a firm that understands your industry, responds fast, files on time, and charges a fixed flat fee — no billing surprises, ever. This hub compiles every expert guide published by Gondaliya CPA Professional Corporation, a Toronto-based CPA firm serving clients across Ontario remotely and in person. Every guide covers a specific accounting, tax, or CRA compliance topic facing Ontario businesses. Use these resources to make an informed decision before you hire any CPA firm in Ontario.

Category 04

SR&ED Tax Credits

Canada's largest R&D incentive — worth up to 35% of eligible costs for Ontario CCPCs. These guides cover eligibility, claim preparation, and CRA defence at a fixed flat fee.

✦ SR&ED

The Best CPAs for SR&ED Tax Credits in Ontario

Comparison of Ontario CPA firms for SR&ED claims — reviewed by sector, claim complexity, ITC recovery rate, and CRA audit track record.

Read full guide
07
Category 05

Small Business, Bookkeeping & Software

Flat-fee bookkeeping, QuickBooks and Xero setup, financial statement preparation, review engagements, and the best accounting firms for small Ontario businesses.

✦ Bookkeeping

Best Accounting Firms for Small Businesses in Ontario

Ranked review of the most affordable, responsive accounting firms serving small businesses across Ontario — with real client outcomes and flat-fee comparisons.

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08
 ✦ Bookkeeping

Best Tax Accountants for Small Businesses in Toronto

Reviewed tax accountants for Toronto small businesses — compared by responsiveness, fee transparency, and corporate and personal tax expertise.

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09
 ✦ Bookkeeping

CPAs for Accounting & Bookkeeping Services in Toronto

Guide to CPA firms offering combined accounting and bookkeeping — monthly books, reconciliations, and financial statements at a flat fee.

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10
 ✦ Bookkeeping

Best Bookkeeping Services for Small Business in Toronto

Reviewed bookkeeping services for Toronto small businesses — covering cloud bookkeeping, payroll integration, and month-end reporting.

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11
 ✦ Software

Top CPA Firms for QuickBooks Setup & Support

Best CPA firms for QuickBooks Online setup, migration, and ongoing support — chart of accounts design, integrations, and clean monthly books.

Read full guide
12
 ✦ Assurance

Top CPA Firms for Review Engagements

Reviewed CPA firms providing review engagement reports for banks, lenders, and stakeholders — compared by turnaround, standards, and flat fee.

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13
Category 06

Payroll & HR Compliance

T4 preparation, payroll remittances, CRA payroll account registration, ROE filing, and contractor vs employee classification for Ontario employers — all at a flat fee.

✦ Payroll

Best CPAs for Payroll Services for Small Businesses in Toronto

Reviewed CPA firms handling small business payroll — remittances, T4 and ROE filing, and CRA payroll account compliance at a flat monthly fee.

Read full guide
14
Category 11

City & Regional CPA Guides

Location-specific comparisons of the best CPA firms serving businesses in Ontario's major centres, with flat-fee and service-breadth rankings.

✦ City Guide

Best CPA Firms in Toronto

Ranked comparison of the top CPA firms in Toronto — evaluated on service breadth, pricing transparency, responsiveness, and specialized expertise.

Read full guide
25
Coverage Area

Serving All of Ontario — Remotely & In Person

All services available remotely province-wide. In-person at 55 Queen St E Ste 1205, Toronto, ON M5C 1R6, Canada, Toronto.

Toronto ↗ Mississauga Brampton Oakville Hamilton Markham Vaughan Richmond Hill Burlington Scarborough North York Etobicoke Ottawa London Kitchener Windsor Barrie Oshawa Ajax Whitby Pickering Newmarket Aurora Milton Guelph All of Ontario ✓
About This Resource

Why Trust These Guides

Every guide on this page meets three standards: written by an industry expert, based on real Ontario client files, and current for 2025 CRA rules.

✓

Written by an Industry Expert

Every guide is authored by an industry expert with 12+ years in practice — not outsourced to a content writer. Licensed CPA Ontario firm.

✓

No Sponsored Rankings

No firm pays to appear in these guides. Rankings reflect responsiveness, fee transparency, and CRA track record only.

✓

Current Ontario Tax Rules

All guides reflect 2025 CRA and Ontario Ministry of Finance deadlines, rates, and filing requirements.

✓

1300+ Verified Google Reviews

Gondaliya CPA has served hundreds of Ontario businesses. These guides reflect real client experience, not theory.

Common Questions

Frequently Asked Questions

The most common questions Ontario business owners ask before hiring a CPA.

How do I choose the best CPA in Ontario for my corporation?+
Look for a CPA firm that charges a fixed flat fee, has experience in your industry, responds within 24 hours, and has verifiable Google reviews. Gondaliya CPA offers transparent flat fees with no billing surprises, serves Ontario businesses remotely and in person, and is available evenings and weekends to 9 PM.
What is the difference between a CPA and a tax accountant in Ontario?+
In Ontario, a CPA is a licensed professional regulated by CPA Ontario. A "tax accountant" is not a regulated designation — anyone can use that term. For corporate tax, SR&ED claims, CRA audit representation, and GST/HST work, always hire a licensed CPA firm.
Does the CPA firm have to be located in my city?+
No. CRA filings and most CPA services are completed remotely using secure document portals and video calls. Gondaliya CPA serves clients in Mississauga, Brampton, Oakville, Hamilton, Markham, Ottawa, and across Ontario without requiring in-person meetings unless preferred.
How does flat-fee CPA pricing work in Ontario?+
Gondaliya CPA charges a single fixed annual fee that covers bookkeeping, T2 filing, GST/HST returns, and payroll — disclosed upfront before any engagement. There are no hourly surprises, no scope creep charges, and no add-on fees. Known as the most affordable CPA in Canada with full pricing transparency.
Can a CPA in Ontario represent me during a CRA audit?+
Yes. A licensed CPA firm can act as your authorized representative before the CRA once you sign the CRA's authorization. Gondaliya CPA handles CRA audit representation for corporate, GST/HST, T4, and payroll audits across Ontario.
How much does a CPA cost for a small business in Ontario?+
It depends on the work, but flat-fee firms remove the guesswork. At Gondaliya CPA, corporate T2 filing starts from $400 per year and combined monthly bookkeeping with year-end and tax filing starts from $100 per month. You receive the exact fee before any work begins, with no hourly billing.
Are your fees inclusive of HST?+
Yes. All quoted fees include HST, so the number you are quoted is the number you pay. There is no hourly billing and no hidden cost added later.
How do I pay a CPA firm in Ontario?+
At Gondaliya CPA, payment is by Interac e-Transfer to info@gondaliyacpa.ca. Auto-deposit is enabled, so no security question is needed. You receive your exact flat fee upfront before any work starts.
What is the deadline to file a T2 corporate tax return in Ontario?+
A corporation must file its T2 within six months of its fiscal year-end. Any balance owing is generally due within two or three months of year-end, depending on the corporation. Filing late triggers penalties and daily interest, so getting it in on time matters.
What happens if my corporation files its tax return late?+
The CRA charges a late-filing penalty of 5% of the unpaid tax plus 1% for each full month late, up to 12 months. Repeat late filers face higher penalties. Daily compound interest also applies. A flat-fee CPA can get you current quickly and pursue relief where the facts support it.
Can a CPA help if I am several years behind on filing?+
Yes. Catch-up and multi-year corporate filing is a common engagement. The firm rebuilds the bookkeeping behind the missing years, files each late T2 in sequence, reconciles your HST and payroll, and requests penalty relief where it applies.
Do I need to register for GST/HST in Ontario?+
You generally must register once your taxable revenue exceeds $30,000 in any four consecutive calendar quarters. Ontario applies 13% HST. A CPA can confirm your obligation, register you, and set up your filing so input tax credits are captured correctly.
What is the difference between federal and Ontario incorporation?+
Federal incorporation gives you name protection across Canada and is governed federally; Ontario incorporation registers your corporation provincially. The right choice depends on where and how you operate. A CPA can walk you through share structure and the post-incorporation CRA registrations either way.
What is SR&ED and could my business qualify?+
SR&ED is Canada's largest research and development incentive, worth a meaningful percentage of eligible costs for qualifying Canadian-controlled private corporations. Developing new products, improving processes or solving technical problems can qualify. Many businesses do eligible work without realizing it, so a review is worthwhile.
Do you offer bookkeeping along with tax filing?+
Yes. You can engage a firm just for the annual corporate filing or for ongoing monthly bookkeeping with the year-end and tax filing included. The monthly option keeps your numbers current all year and usually makes tax time far simpler.
Which accounting software do Ontario CPAs use?+
Most modern firms work in QuickBooks Online or Xero. Both let your CPA keep the books current remotely, share financial statements, and give you live access to your numbers from anywhere in the province.
Can a CPA handle my payroll?+
Yes. Full-service payroll includes source deduction remittances, T4 slips, records of employment and WSIB reporting. A flat-fee CPA can run it remotely so your team is paid and your CRA accounts stay compliant.
What is the difference between a notice to reader, a review, and an audit?+
A compilation (notice to reader) presents your numbers without assurance, a review provides limited assurance through inquiry and analysis, and an audit provides the highest level of assurance through detailed testing. Most small Ontario corporations need a compilation; lenders sometimes ask for a review.
Do you provide financial statements with the corporate tax filing?+
Yes. Year-end financial statements are prepared as part of the corporate tax engagement and shared with you, so you have what you need for the CRA, your bank and your own records.
Can a CPA help me respond to a CRA review or reassessment?+
Yes. A licensed CPA can act as your authorized representative, handle CRA correspondence on your behalf, and prepare the responses and supporting documents. You do not have to deal with the CRA alone.
What records do I need to give my CPA to get started?+
Typically your bank and credit card statements, prior tax returns, incorporation documents and any bookkeeping records you have. A good firm gives you a clear checklist at onboarding so you know exactly what to provide.
How long does it take to get onboarded as a new client?+
Onboarding is usually quick. After a free consultation and an exact fee, you approve and pay, then receive secure portal access, often the same day, and work can begin right away.
Can you take over from my current accountant mid-year?+
Yes. A firm can take over at any point in the year, review what has been done so far, request your records and prior filings, and continue seamlessly so nothing falls through the cracks.
Do you serve businesses outside the GTA?+
Yes. Services are delivered remotely across all of Ontario and Canada, with the same flat-fee pricing regardless of location. In-person meetings are available in Toronto when preferred.
Is the director's personal tax return included with corporate filing?+
With Gondaliya CPA's corporate tax package, the director's personal tax return is included at no extra cost, so the corporate and personal sides line up correctly.
What is the 30-Day Money-Back Guarantee?+
For 2026 services, if you are not satisfied with the work, Gondaliya CPA offers a 30-day money-back guarantee. It reflects the firm's confidence in the quality and value of its service.
What is the 60-Day Fees-Matching Policy?+
If you receive a written quote from another licensed CPA firm for the same scope of work, Gondaliya CPA will match it within 60 days of engaging. The firm has full confidence in its lowest-fee positioning, which is why it offers fees-matching.
Can a CPA help with cryptocurrency tax reporting?+
Yes. A CPA can determine whether your crypto activity is capital gains or business income, reconcile your exchange records, and prepare CRA-compliant reporting. This is increasingly common and the CRA pays close attention to it.
Do you help non-residents with Canadian tax and corporations?+
Yes. This includes non-resident tax returns, non-resident corporations operating in Canada, withholding and treaty matters, and cross-border structures, all coordinated remotely.
How do I get started?+
Book a free consultation or request an exact quote. Once you approve the fee and pay by Interac e-Transfer, you receive portal access and the work begins. It is straightforward and there is no obligation to proceed after the consultation.

Get Expert CPA Advice for Your Ontario Business

Gondaliya CPA serves business clients exclusively across Ontario. Fixed flat fees. 1300+ Google reviews. Available evenings and weekends to 9 PM.

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