| Adjala-Tosorontio, Township of, Municipal Office | New Tecumseth |
| Alnwick/Haldimand. Municipal Office | Grafton |
| Amaranth. Municipal Office | Amaranth |
| Archipelago (The). Municipal Office | Parry Sound |
| Armour. Municipal Office | Burk's Falls |
| Arran-Elderslie. Municipal Office | Arran-Elderslie |
| Barrie. Municipal Office, Finance Department | Barrie |
| Blue Mountains (The). Municipal Office, Thornbury - Mill St | Blue Mountains |
| Bluewater. Municipal Office | Bluewater |
| Bradford West Gwillimbury Municipal Office | Bradford West Gwillimbury |
| Breaking Down Barriers, Independent Living Resource Centre, Income Tax Clinic | Collingwood |
| Brighton. Municipal Office, Brighton - Alice Street, Administration | Brighton (Municipality of) |
| Brockton. Municipal Office, Walkerton - Scott St | Brockton |
| Burk's Falls (Village of). Municipal Office | Burk's Falls |
| Canada. Canada Revenue Agency [Simcoe County], Community Volunteer Income Tax Program | Bradford West Gwillimbury |
| Canada. Canada Revenue Agency, Midland Public Library, Community Volunteer Income Tax Program | Midland |
| Canada. Canada Revenue Agency - Grey Bruce, Brockton, Community Volunteer Income Tax Program | Brockton |
| Canada. Canada Revenue Agency - Grey Bruce, Bruce County Public Library, Chesley Branch, Community Volunteer Income Tax Program | Arran-Elderslie |
| Canada. Canada Revenue Agency - Grey Bruce, Bruce County Public Library, Kincardine Branch, Community Volunteer Income Tax Program | Kincardine |
| Canada. Canada Revenue Agency - Grey Bruce, Bruce County Public Library, Port Elgin Branch, Community Volunteer Income Tax Program | Saugeen Shores |
| Canada. Canada Revenue Agency - Grey Bruce, Bruce County Public Library, Walkerton Branch, Community Volunteer Income Tax Program | Brockton |
| Canada. Canada Revenue Agency - Grey Bruce, Bruce Peninsula - Mobile and Virtual Service, Community Volunteer Income Tax Program | Northern Bruce Peninsula |
| Canada. Canada Revenue Agency - Grey Bruce, Markdale, Community Volunteer Income Tax Program | Grey Highlands |
| Canada. Canada Revenue Agency - Grey Bruce, Meaford Public Library, Community Volunteer Income Tax Program | Meaford |
| Canada. Canada Revenue Agency - Grey Bruce, Neustadt, Community Volunteer Income Tax Program | West Grey |
| Canada. Canada Revenue Agency - Grey Bruce, Owen Sound - Canada Tax Helpers, Community Volunteer Income Tax Program | Owen Sound |
| Canada. Canada Revenue Agency - Grey Bruce, Owen Sound - Harrison Park Senior Centre, Community Volunteer Income Tax Program | Owen Sound |
| Canada. Canada Revenue Agency - Grey Bruce, Community Volunteer Income Tax Program, Owen Sound - for Indigenous Families | Owen Sound |
| Canada. Canada Revenue Agency - Grey Bruce, Owen Sound CVITP, Community Volunteer Income Tax Program | Owen Sound |
| Canada. Canada Revenue Agency - Grey Bruce, Thornbury, Community Volunteer Income Tax Program | Blue Mountains |
| Canada. Canada Revenue Agency - Grey Bruce, Tobermory, Community Volunteer Income Tax Program | Northern Bruce Peninsula |
| Canada. Canada Revenue Agency - Grey Bruce, Wiarton, Community Volunteer Income Tax Program | |
| Canada. Canada Revenue Agency - Muskoka Parry Sound, Huntsville Public Library, Community Volunteer Income Tax Program | Huntsville |
| Canada. Canada Revenue Agency - Muskoka Parry Sound, Community Volunteer Income Tax Program | |
| Canada. Canada Revenue Agency - Muskoka Parry Sound, Community Volunteer Income Tax Program | Greater Sudbury |
| Canada. Canada Revenue Agency - Muskoka Parry Sound, Wasausink Lands, Community Volunteer Income Tax Program | Parry Sound |
| Canada. Canada Revenue Agency [Barrie], Barrie - RIAA'S, Community Volunteer Income Tax Program | Barrie |
| Canada. Canada Revenue Agency [Barrie], Barrie - U1U, Community Volunteer Income Tax Program | Barrie |
| Canada. Canada Revenue Agency [Barrie], Barrie, North Central Ontario Tax Services Office - Barrie | Barrie |
| Canada. Canada Revenue Agency [Barrie], No Physical Address, Community Volunteer Income Tax Program | Barrie |
| Canada. Canada Revenue Agency [Central East], Online/Web Service, Online Course and Video Presentations | Barrie |
| Canada. Canada Revenue Agency [Orangeville], Orangeville and District Seniors Centre, Community Volunteer Income Tax Program, Orangeville and District Seniors Centre | Orangeville |
| Canada. Canada Revenue Agency [Peterborough], Peterborough - Trent University, Community Volunteer Income Tax Program, Peterborough - Trent University | Peterborough |
| Canada. Canada Revenue Agency [Simcoe County], Angus - address not included, Community Volunteer Income Tax Program | Essa |
| Canada. Canada Revenue Agency [Simcoe County], Collingwood, Community Volunteer Income Tax Program | Collingwood |
| Canada. Canada Revenue Agency [Simcoe County], Wasaga Beach - Virtual, Community Volunteer Income Tax Program | Wasaga Beach |
| Canada. Canada Revenue Agency [Simcoe County], Community Volunteer Income Tax Program | Wasaga Beach |
| Canada. Canada Revenue Agency [Simcoe County], Community Volunteer Income Tax Program | Springwater |
| Canada. Canada Revenue Agency [Simcoe County], Community Volunteer Income Tax Program | Innisfil |
| Canada. Canada Revenue Agency, Toronto Region, Canada Child Benefit | Toronto |
| Carling. Municipal Office | McDougall |
| Cavan Monaghan. Municipal Office | Millbrook |
| Central Huron. Municipal Office, Clinton - 23 Albert St, Municipal Office | Central Huron |
| Chatsworth (Township of). Municipal Office | Chatsworth |
| City of Kawartha Lakes, Bobcaygeon - East St S, Bobcaygeon Municipal Service Centre | Kawartha Lakes |
| City of Kawartha Lakes, Coboconk - Grandy Rd, Coboconk Municipal Service Centre | Kawartha Lakes |
| City of Kawartha Lakes, Lindsay - 180 Kent St W, Lindsay Municipal Service Centre | Kawartha Lakes |
| City of Kawartha Lakes, Omemee - King St W, Omemee Municipal Service Centre | Kawartha Lakes |
| Clearview. Municipal Office | Clearview (Simcoe County) |
| Clinton United Church | Central Huron |
| CMHA Thames Valley Addiction and Mental Health Services - Huron County Sites, Exeter, Community Mental Health Services - Exeter | South Huron |
| Cobourg. Municipal Office, Cobourg Municipal Office | Cobourg |
| Collingwood. Municipal Office, Collingwood - Hurontario St | Collingwood |
| Community Volunteer Income Tax Program, Bayfield Branch - Huron County Library, Community Volunteer Income Tax Clinic | Bluewater |
| Community Volunteer Income Tax Program, Blyth Branch - Huron County Library, Community Volunteer Income Tax Clinic | North Huron |
| Community Volunteer Income Tax Program, Brussels Branch - Huron County Library, Community Volunteer Income Tax Clinic | Huron East |
| Community Volunteer Income Tax Program, Clinton United Church, Community Volunteer Income Tax Clinic | Central Huron |
| Community Volunteer Income Tax Program, Exeter Branch - Huron County Library, Community Volunteer Income Tax Clinic | South Huron |
| Community Volunteer Income Tax Program, Forest Branch - Lambton County Library, Community Volunteer Income Tax Clinic | Lambton Shores |
| Community Volunteer Income Tax Program, Goderich Branch - Huron County Library, Community Volunteer Income Tax Clinic | Goderich |
| Community Volunteer Income Tax Program, Grand Bend Area Community Health Centre, Community Volunteer Income Tax Clinic | Lambton Shores |
| Community Volunteer Income Tax Program | Haliburton |
| Community Volunteer Income Tax Program, Hensall Branch - Huron County Library, Community Volunteer Income Tax Clinic | Bluewater |
| Community Volunteer Income Tax Program, Lucan Branch, Middlesex County Library, Community Volunteer Income Tax Clinic | Lucan |
| Community Volunteer Income Tax Program, Parkhill Branch - Middlesex County Library, Community Volunteer Income Tax Clinic | North Middlesex |
| Community Volunteer Income Tax Program, Seaforth Branch - Huron County Library, Community Volunteer Income Tax Clinic | Huron East |
| Community Volunteer Income Tax Program, Strathroy Branch, Middlesex County Library, Community Volunteer Income Tax Clinic | Strathroy |
| Community Volunteer Income Tax Program, Thedford Branch - Lambton County Library, Community Volunteer Income Tax Clinic | Lambton Shores |
| Community Volunteer Income Tax Program, Wingham Branch - Huron County Library, Community Volunteer Income Tax Clinic | North Huron |
| Community Volunteer Income Tax Program, Zurich Branch - Huron County Library, Community Volunteer Income Tax Clinic | Bluewater |
| Cramahe (Township of). Municipal Office, Colborne - Toronto St, Cramahe (Township of). Municipal Office Administration | Colborne |
| Douro-Dummer. Municipal Office, Warsaw - South St, Douro-Dummer Municipal Office | Douro-Dummer |
| Essa (Township of). Municipal Office | Essa |
| General Topics and Information - Central East, Free and Low Cost Community Volunteer Income Tax Clinics Simcoe County, Various Locations | |
| General Topics and Information - Central East, Free Community Volunteer Income Tax Clinics Grey Bruce | |
| General Topics and Information - Central East, Income Tax Clinics, Northumberland County | |
| General Topics and Information - Central East, Income Tax Clinics, Perth County | |
| General Topics and Information - Central East, Various Locations, Information on income tax filings and credits | |
| Georgian Bluffs (Township of). Municipal Office | Owen Sound |
| Goderich. Municipal Office | Goderich |
| Grand Valley. Municipal Office | Grand Valley |
| Gravenhurst. Municipal Office | Gravenhurst |
| Grey Highlands. Municipal Office | Grey Highlands |
| Hamilton Township. Municipal Office, Cobourg - Majestic Hills Dr, Municipal Office | Cobourg |
| Hanover. Municipal Office | Hanover |
| Havelock-Belmont-Methuen. Municipal Office | Havelock-Belmont-Methuen |
| Huron County. Municipal Office, Huron County Office | Goderich |
| Huron East. Municipal Office, Seaforth - Main St S | Huron East |
| Huron-Kinloss. Municipal Office | Ripley |
| Information Orillia, Income Tax Clinic, Orillia Public Library | Orillia |
| General Topics and Information - Central East, Involuntary Separation | |
| Kawartha Youth Unlimited, Free Income Tax Clinics | Selwyn Township |
| Kearney. Municipal Office | Kearney |
| Kincardine. Municipal Office, Municipal Administration Centre | Kincardine |
| Lake of Bays. Municipal Office | Lake of Bays Township |
| Magnetawan. Municipal Office | Magnetawan |
| McKellar. Municipal Office | Mckellar |
| Meaford. Municipal Office | Meaford |
| Melancthon. Municipal Office | Melancthon |
| Mono, Town of, Mono. Municipal Office | Mono |
| Mulmur. Municipal Office | Mulmur |
| Municipal Office. Asphodel-Norwood | Asphodel-Norwood |
| Municipal Property Assessment Corporation, Trenton Assessment Field Office | Trenton |
| New Canadians Centre, Peterborough Branch | Peterborough |
| New Tecumseth. Municipal Office | New Tecumseth |
| North Huron. Municipal Office, Wingham | North Huron |
| North Kawartha. Municipal Office | Apsley |
| North Perth. Municipal Office | North Perth |
| Northern Bruce Peninsula. Municipal Office | Northern Bruce Peninsula |
| Ontario. Ministry of Finance., Oshawa, Retail Sales Tax | Oshawa |
| Orangeville, Town of, Orangeville. Municipal Office | Orangeville |
| Orillia, City of, Orillia - Andrew St, Municipal Office | Orillia |
| Otonabee-South Monaghan. Municipal Office | Otonabee-South Monaghan |
| Owen Sound. Municipal Office, Owen Sound - 808 2nd Ave E | Owen Sound |
| Parry Sound. Municipal Office | Parry Sound |
| Penetanguishene, Town of, Municipal Office | Penetanguishene |
| Perry. Municipal Office | Perry |
| Perth East. Municipal Office, Milverton - Mill St E, Municipal Office | Perth East |
| Perth South. Municipal Office, St. Pauls - Road 122 | Perth South |
| Peterborough (City of). Municipal Office, Property Tax Assistance Program, Peterborough - George St N | Peterborough |
| Peterborough (County of), Peterborough, Tax Relief Program | Peterborough |
| Port Hope. Municipal Office | Port Hope (Municipality of) |
| Powassan. Municipal Office | Powassan |
| Ryerson. Municipal Office | Burk's Falls |
| Salvation Army Orillia Citadel (The), Orillia - Coldwater Rd W, Income Tax Clinic | Orillia |
| Salvation Army, Listowel, 326 Main St. E, Unit D - Family Services & Food Bank, Community and Family Services | North Perth |
| Salvation Army, Stratford - St. Marys Regional Community Ministries, Stratford - Lightbourne Ave, Community and Family Services, Free Income Tax Clinic | Stratford |
| Saugeen Shores. Municipal Office, Port Elgin - Tomlinson Dr | Saugeen Shores |
| Seguin. Municipal Office | Seguin |
| Selwyn Outreach Centre, FRIENDS Peterborough | Peterborough |
| Selwyn. Municipal Office | Selwyn Township |
| Service Canada, Barrie, Service Canada Centre, Barrie | Barrie |
| ServiceOntario, Lindsay, Lindsay Service Counter | Lindsay |
| ServiceOntario, Minden, Minden Service Counter | Minden Hills |
| Shelburne, Town of, Shelburne. Municipal Office | Shelburne |
| South Bruce Peninsula. Municipal Office | Wiarton |
| South Bruce. Municipal Office | South Bruce |
| South Huron. Municipal Office, South Huron - Main St S Municipal Office | South Huron |
| Southgate (Township of). Municipal Office | Southgate |
| St Marys. Municipal Office, St. Marys - Queen St | St Marys |
| Stratford. Municipal Office, Stratford City Hall | Stratford |
| Strong Township. Municipal Office | Sundridge |
| The Help Centre, Income Assistance | Cobourg |
| The Municipality of Whitestone, Municipal Office | Whitestone |
| Tiny, Township of, Municipal Office | Tiny |
| Town of Innisfil, Innisfil Municipal Office, Town Hall | Innisfil |
| Township of Amaranth. Municipal Office | Amaranth |
| Township of Howick. Municipal Office | Howick |
| Township of Nipissing. Municipal Office | Nipissing |
| Trent Lakes. Municipal Office | Trent Lakes |
| Wasaga Beach. Municipal Office | Wasaga Beach |
| West Grey. Municipal Office | Durham Region |
| West Perth. Municipal Office, Municipal Office - Wellington St | West Perth |
| YWCA Peterborough Haliburton, Peterborough, Income Tax Assistance | Peterborough |