Welcome to CIS Income Tax and Accounting Services. Niagara’s trusted tax experts since 1981.

Income tax preparation – Corporate tax returns – US tax returns – Flat fee US gambling tax recovery – HST filing and bookkeeping services

COVID-19 UPDATEOur office is open however we encourage clients to print and complete a Drop Off Sheet and attach it to your tax documents. New clients must also include an authorization form. Clients can also use the drop-off slot at our front door or post/email documents any time. We’re grateful for your cooperation during this difficult time and look forward to continue serving you.  


 *IMPORTANT: Our new Drop-Off sheet is fillable only with Adobe. Alternatively, it can be filled manually after printing. Once completed, you may either drop off, post, scan, or email your documents to us.     


  • Qualifying individuals can apply for the Canada Recovery Benefit for September 2020 to 2021.
  • Qualifying individuals can apply for the Canada Recovery Caregiver Benefit for September 2020 to 2021.
  • Qualifying individuals can apply for the Canada Recovery Sickness Benefit for September 2020 to 2021
  • To apply for the CRB, CRCB, CRSB, or Wage Subsidy, please visit the CRA website or call 1-800-959-2019.
  • For more information, please read Canada’s Economic Response Plan.   


  • Economic Impact (Stimulus) payments will automatically be issued if you have filed a US tax return.
  • To learn more, please visit the IRS website for US Coronavirus Tax Relief and Economic Impact Payments.

 Get on the spot refunds with CIS Fast Cash Refund®

 Visit our tax tips page to learn about current tax credits, exemptions and programs.


Accounting Services

Year round accounting services for businesses throughout the Niagara Region, Halton and the GTA. Small business and corporate tax returns. Let us do your HST filing and payroll so you can concentrate on your success!

US and Canadian tax filing image

US Tax Returns & US Gambling Tax Recovery

We prepare Canadian and US income tax returns and specialize in recovering taxes paid on US gambling wins. Don’t let the IRS keep your winnings, come and see us and we’ll get your money back for you.