| A |
| A Hundred Answersnot edited since 2018 | 340 March Road, Kanata | | | |
| A Plus Accounting | 1526 Merivale Road, Nepean | | | |
| ABFKnot edited since 2019 | Osgoode, no street on record | | | |
| Accountant & Financial Planning Groupnot edited since 2018 | 1719 Bank Street, Alta Vista | | | |
| Accountapotamusnot edited since 2018 | 235 Terence Matthews Crescent, Kanata | | | |
| Accounting Ottawanot edited since 2018 | 508 Gladstone Avenue, Centretown | | | |
| Accounting Plusnot edited since 2019 | 1355 Wellington Street West, Hintonburg | | | |
| ACI Systemsnot edited since 2018 | 81 Auriga Drive, Nepean | | | |
| Al-Mullanot edited since 2018 | 2285 St-Laurent Boulevard, Alta Vista | | | |
| Andrews and Companynot edited since 2018 | 540 Lacolle Way, Orléans | | | |
| Associated Accountsnot edited since 2018 | 460 West Hunt Club Road, Nepean | | | |
| B |
| Barbara Elkinnot edited since 2018 | 160 George Street, Lowertown | | | |
| Beck Accounting and Taxnot edited since 2018 | 395 A Chapman Mills Drive, Riverside South | | | |
| BMT Consultants | 2283 St-Laurent Boulevard, Alta Vista | bmtconsultants.com | +1-613-518-2820 | |
| Bonini Bookeepingnot edited since 2018 | 370 Churchill Avenue North, Westboro | | | |
| Bouris, Wilsonnot edited since 2018 | 1701 Woodward Drive, Westboro | | | |
| Bytown Bookeepingnot edited since 2018 | 2285 St-Laurent Boulevard, Alta Vista | | | |
| C |
| Canadian Payroll & Tax Servicesnot edited since 2022 | 375 Des Épinettes Avenue, Orléans | canadianpayrollandtaxservices.com | | |
| Capital Tax Expertsnot edited since 2018 | 316 O'Connor Street, Centretown | | | |
| Charles Gaban Accounting | 1419 Carling Avenue, Westboro | | | |
| Charles Gadban Accountantsnot edited since 2018 | 2039 Robertson Road, Bells Corners | | | |
| Collins Barrownot edited since 2018 | 303 Moodie Drive, Bells Corners | | | |
| Crowe BGKnot edited since 2018 | 340 March Road, Kanata | | | |
| D |
| D&A MacLeodnot edited since 2018 | 343 O'Connor Street, Centretown | | | |
| Deloittenot edited since 2019 | 515 Legget Drive, Kanata | | | |
| Deltax Accountingnot edited since 2018 | 2900 Gibford Drive, South Keys | | | |
| Denis Robert | 1420 Youville Drive, Blackburn Hamlet | | | |
| Duval Bookeeping & Paynot edited since 2018 | 876 Montréal Road, Gloucester | | | |
| E |
| Ernest & Company CPAnot edited since 2019 | 5310 Canotek Road, Gloucester | | | |
| Expert Income Tax Service | 1167 Wellington Street West, Hintonburg | | | |
| F |
| Fontaine & Associatesnot edited since 2019 | 150 Montréal Road, Vanier | | | |
| G |
| G. Michael Simpsonnot edited since 2019 | 1420 Youville Drive, Blackburn Hamlet | | | |
| H |
| H&R Blocknot edited since 2020 | 250 Greenbank Road, Nepean | hrblock.ca | +1-343-700-4438 | |
| Hatran Blak-Inknot edited since 2018 | 569 McArthur Avenue, Vanier | | | |
| Hein & Associatesnot edited since 2022 | 1445 Stittsville Main Street, Stittsville | | | |
| Hunt Club Accounting & Tax | 1183 Hunt Club Road, South Keys | | | |
| J |
| Jacques P. Alexaniannot edited since 2018 | 1010 Polytek Street, Gloucester | | | |
| K |
| Kanata Tax Servicesnot edited since 2019 | 110 Westhunt Road, Stittsville | | | |
| Kelly Huibers McNeely | 5992 Hazeldean Road, Stittsville | | | |
| L |
| Ledgers Canadanot edited since 2019 | 1803 St. Joseph Boulevard, Blackburn Hamlet | | | |
| Liberty Income Taxnot edited since 2019 | 2895 Bank Street, South Keys | | | |
| Liberty Taxnot edited since 2022 | 2090 Robertson Road, Bells Corners | libertytaxcanada.ca | +1-613-828-8300 | |
| Liberty Tax Servicenot edited since 2018 | 2339 Ogilvie Road, Gloucester | | | |
| LLH Accountingnot edited since 2018 | 5450 Canotek Road, Blackburn Hamlet | | | |
| M |
| McCay Duff LLPnot edited since 2019 | 141 Laurier Avenue West, Centretown | | +1-613-902-2509 | |
| N |
| Nancy M. McGladenot edited since 2018 | 5542 Ann Street, Manotick | | | |
| S |
| Softron Taxnot edited since 2019 | 1200 St-Laurent Boulevard, Vanier | | | |
| T |
| T1 Plusnot edited since 2022 | 436 Rideau Street, Sandy Hill | | | |
| Tactica Wealth Managementnot edited since 2018 | 2900 Gibford Drive, South Keys | | | |
| TurnerMoore LLPnot edited since 2018 | 250 Glenroy Gilbert Drive, Barrhaven | | | |