Gain Control

Greater Sudbury’s Top Bookkeeping Firm. Gain Control is customized to your unique needs and budgets.
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Who we are

GAIN confidence and Peace of Mind in knowing that your bookkeeping needs are being handled by professionals, allowing you to focus on growing your business. We belong to the Institute of Professional Bookkeepers of Canada. This allows us access to unlimited information resources.

Our prices are reasonable and we allow clients to utilize us on a weekly, monthly, or yearly basis! The expertise we have inside our organization allows us to help small businesses and growing empires.
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Why we should work together

GAIN CONTROL Bookkeeping & Tax Services
is a full charge bookkeeping firm that provides precise and quality accounting services compliant with GAAP principles. We serve clients across Canada and internationally. Our clients benefit from over 30 years combined experience in a wide variety of industries. They also benefit from our innovative approach to tailoring our services to meet your specific needs. Our flat-fee billing policy allows for better cash-flow management and avoids unanticipated surprises. Our practice is a securely monitored Cloud based system which allows for clients anywhere!

Our Services


Processing, T4's, WSIB, Record of Employment, Group Insurance, Union dues...

Accounts Receivable

Invoicing, Deposits

Accounts Payable

Invoice Entry, Cheque Preparation & Disbursements, Direct Deposit


Harmonized Sales Tax, Personal Income Tax Preparation & Small Business Income Tax Preparation


Bank Reconciliation, Year End Reporting, Financial...

Consulting & Training

On-Site, One-on-One Customized Training in Sage50 & QuickBooks Online®

Other Services

Pick-up and Delivery Service
"A business is 223 times more likely to succeed if partnered with an accounting professional."


"Best bookkeeping services ever!!! I have online business with multiple income streams, I submit hundreds of receipts both American and Canadian and they do an amazing job at organizing and preparing my taxes for me. They save me tons of work and time, which relieves a lot of stress for me. They are also very nice and it's a pleasure dealing with them."
Venessa Langen
November, 2018
"Gain Control BookKeeping has been absolutely outstanding to deal with and have made my business paperwork a breeze. They are always quick to answer questions and help out with any issues I have. One stop answers and help as needed. I can count of them to make my life easier:) I highly recommend Gain Control Bookkeeping!"
Jennifer LeBel
December, 2018
"Gain Control Bookkeeping has been amazing to work with. I’m a new business owner in the Valley and they have been very helpful in guiding me in the right direction-by setting me up, training and coaching me along the way and offereing advice how on to grow. Thank you to Shari and her team for all your help along the way!"
Hele Dubois
November, 2018
"Shari and her team are amazing at what they do.  They are always prompt at responding to any requests, and go above and beyond for their clients!  Highly recommend Gain Control's services."
Launchpad Creative
November, 2018
"Gain Control is THE bookkeeping company that will hold your hand and keep your stress level down. Shari's enthusiasm is contagious--even if you don't like numbers and processes! Always responsive, available, humble and efficient. If you are a new business or a growing existing company, Gain Control should definitely be part of your team !!!"
Nadia Morin - Plan A - Halton
November, 2019