Business Service Company

Double Check Income Tax

Ottawa accounting firm offering income tax, bookkeeping, payroll and business start-up services to small and medium-sized businesses

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TrustList summary

Double Check Income Tax is an accounting and income tax firm based in Ottawa. It works with individuals and with small and medium-sized businesses across Ottawa and the surrounding regions, and has served clients in the Montreal area since opening a branch there.

Products and services

Income tax returns: preparing and filing personal and business tax returns, including prior year returns and returns for any province.
Bookkeeping and accounting: bookkeeping, financial statements and day-to-day accounting management.
Payroll: payroll support as part of its accounting services.
Business start-up and internal control: advice for new businesses and help setting up internal control.
Budgeting and consulting: counselling on financial, tax and business questions, and help defining performance measures for projects.

Customers and markets

Small business owners, managers of large organisations, and individuals who need help with personal tax or financial matters.

Key facts

Based in: Ottawa
Founded: 1983
Montreal branch: opened about ten years after the firm was founded
Led by: Joseph Colas, an accountant and tax advisor
Office hours: Monday to Friday, 9am to 5pm

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

Double Check Income Tax is ranked on 3 TrustList rankings: #11 on 1, #34 on 1 and #36 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Double Check Income Tax has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Business service company · 3 rankings

On 2 of these it sits behind Abrams, Foster, Nole & Williams, P.A., ahead of Flower City Tax.

#11of 34
Canada
It is one of 2 here listing SEO and one of 9 here listing tax.
Of the 34 here, 14 also cover accounting and 9 also cover tax; 9 also work in Vancouver and 4 also work in Alberta.
Behind GoodReports, ahead of Agilec.
#34of 397
Tax
It is one of 57 here listing accounting.
Its profile: “Double Check Income Tax is an accounting and income tax firm based in Ottawa.”
Of the top 72 here, 15 also cover legal and 10 also cover reporting; 4 also work in Texas and 3 also work in Ohio.
#36of 381
Accounting
It is the only one of the top 73 here listing SEO and one of 51 here listing tax.
Its profile: “Double Check Income Tax is an accounting and income tax firm based in Ottawa.”
Of the top 73 here, 10 also cover government and 9 also cover simple; 4 also work in York and 3 also work in New York.