Welcome to Simple Sums Accounting

Tax Bookkeeping Payroll Vancouver WA
Tax Bookkeeping Payroll
Teresa Silva
Grant Silva - Simple Sums Accounting Staff

Simple Sums Accounting is a tax and bookkeeping business locally owned and operated by Teresa Silva located in Vancouver, WA.

Specializing in personal and small business tax preparation, including small business bookkeeping and payroll, Teresa’s goal is to provide simple solutions to your everyday accounting needs.

Teresa has nearly 20 years of experience in all areas of accounting. She holds a Master of Science degree in Forensic Accounting and is a Certified Credit Executive.

Teresa belongs to many professional organizations and associations including the AICPA, the WSCPA, and NACM. She currently serves on the board of the NACMNW Foundation.

Grant has worked in the customer service industry for over 15 years and has been focusing his efforts in Marketing for the last 5 years of his career.  He has worked with small businesses and organizations such as Mystique Gallery, High Desert Café and Special Olympics Oregon (SOOR) providing consultation on Marketing techniques. 

Our Services


Ranging from simple setup and personalized accounting software tutoring to complete transactional entry and reconciliations, Simple Sums Accounting’s bookkeeping services are individually tailored to your business needs.


While most consider income taxes first when they think of tax service, Simple Sums Accounting understands that there are over 9,000 different taxing authorities in the United States and your tax needs may include sales and use taxes, excise taxes, payroll taxes, or property taxes. Teresa has experience in filing taxes in multiple states and jurisdictions as well as researching tax notices and reviewing previously returned files.

Information for Small Business

There is a lot of information that can be missed by Small Business owners. Here is an example of information that is often times misinterpreted. Check out Teresa’s article from LinkedIn on our new BLOG page.


Simple Sums Accounting understands the complex tax and reporting requirements for both Washington and Oregon payroll. This is a new service Teresa is proud to provide to her clients. New state are being added, so please feel free to inquire.

My approach is simple-collaboration on your terms to provide GAAP standard accounting while remaining sensitive to your individual business needs.

-Teresa Silva

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Contact Us

Contact us today to set up appointment!

Simple Sums Accounting

Simple Sums Accounting
H. H. Hall Building
10000 NE 7th Avenue
Suite 100-C
Vancouver, WA 98685

Phone: (360) 260-2903

Email: info@simplesums.com



Hours of Operation

Monday – 9 AM – 5 PM

Tuesday – 9 AM – 5 PM

Wednesday – 9 AM – 5 PM

Thursday – 9 AM – 5 PM

Friday – 9 AM – 5 PM

Saturday – By Appointment

Sunday – By Appointment

We can accommodate your work schedule. We offer appointments outside our regular business hours by appointment.

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