About Us

Sustainable Growth LLC is a Las Vegas, NV firm specializing in accounting services for business owners. We understand that each client has different needs, so we take the time to get to know you in order to build a long-lasting relationship for years to come.  

At Sustainable Growth LLC we take continuing education courses to keep pace with the ever-changing tax laws. We work diligently to ensure that you are able to take all the legally allowed credits and deductions to pay the least amount of income taxes possible.

We offer free consultations to discuss how we can help you and our competitive rates insure you receive the best value for services performed.   










Sandra Mazonas, EA is the owner and lead accountant. She has a passion for the whole business and individual picture when it comes to bookkeeping and tax services.


Sandra graduated with B.A. in Accounting and has worked with many small business owners helping with bookkeeping and tax needs. Also, she received Enrolled Agent credential in 2016, therefore she's authorized to represent taxpayers before the Internal Revenue Service.


While not working, Sandra enjoys spending time with family and friends in great outdoors.

Share by: