Welcome to Simple Sums Accounting

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

We specialize in educating our clients in becoming tax efficient through advisory services and identifying an overall strategy for to reach your business & personal goals. We know that reaching these goals and limiting your tax liability are the result of critical planning. 

The Team

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 Public Accountant.

Teresa belongs to many professional organizations and associations including the AICPA, and the WSCPA. She currently serves as Board Chair of the Portland Chapter of CFDD.

Grant is an experienced tax preparer who holds an Enrolled Agent  designation with unique knowledge of helping small businesses grow with his over 20 year experience in the service industry.

Brianna has worked with small businesses in the Vancouver area for 7 years including Puariea Chiropractic Center as a receptionist and Camas Christian Academy as a preschool teacher’s aide and office admin. Most recently, she has spent the last 3 years as a small business bookkeeper & office manager for a local landscaping company helping to streamline procedures and workflows. She holds an Associate of Arts Degree from Clark College and is currently working towards a Bachelor of Science in Business Administration from Columbia Southern University. Her concentration is in Human Resources with hopes of using her degree to implement strategies to improve employee management in small businesses. 

Lindsay has worked in the Vancouver/Portland and has held many different positions. Her work history includes being the office administrator for a local insurance company, a teacher’s aide position at a local private school, an office administrator and bookkeeper for a local landscaping company, and most recently, an accounts receivable specialist for a large trucking company based in Portland. With an Associate of Arts degree from Clark College, Lindsay has taken many college courses in hopes of getting her bachelor’s degree in business and pursuing a CPA certification.

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.


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.


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.

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!

Tax | Bookkeeping | Payroll - Accounting Services - Vancouver, WA

H. H. Hall Building
10000 NE 7th Avenue #325
Vancouver, WA 98685
Phone: (360) 260-2903
Email: grant@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 are currently only offering virtual meetings. For more information about tax prep please contact us directly at GRANT@SIMPLESUMS.COM


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

Please fill out our secure contact form to request information about services or appointments.

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