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Bertrand Bookworks


Bertrand Bookworks is a boutique bookkeeping firm based out of Denver. We pride ourselves on being able to provide affordable bookkeeping services for small to medium sized businesses. Our goal is to create work that is honest and accurate while helping your business grow without breaking the bank. Lyster Bertrand has been in the accounting industry for 20 years. Lyster has worked with a diverse group of companies and industries such as retail, non-profits, wholesale, construction, medicaid and many others.  Lyster is a certified Bookkeeper, Quickbooks Pro-Adviser for desktop,online and certified in Xero. We love building relationships and hope that you will be next!


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Providing both on site bookkeeping, we tailor our services to fit your business needs and budget.

BOOKKEEPING: Account Reconciliations, Accounts Payable, Accounts Receivable, Financial Statement Prep, Sales & Use Tax Filing, Job Costing, Classification Accounting, General Ledger Review,Work in Progress Accounting

PAYROLL: Processing of Payroll & Certified Payroll, Processing of Payroll Taxes

TRAINING: In QuickBooks Online, Desktop and Xero

OTHER SERVICES: Setting up Books for New Businesses, Medicaid Billing



educational training

Bertrand Bookworks is proud of our start-up companies and want them to succeed. We know that finances can be strained and you might not be able to commit to bookkeeping services initially. We offer education sessions in QuickBooks Desktop, QuickBooks Online and Xero for the novice proprietors. Whether you are converting or setting up a brand new company our sessions will be tailored to your needs.  Please call for more information.


What our clients say

We have worked with Lyster for 3 years. Lyster provides us with professional means of organizing our businesses financial life at a very reasonable price. i would recommend to anyone who has a small business.
— Brett M.
Lyster works hard to get the task at hand done correctly and in a timely fashion. On top of that, she is incredibly personable. Always a pleasure to work with her!
— Jennifer P.
Lyster works on multiple sets of books for our business. She has been working for us for over 5 years and we are very satisfied with her services. We are looking forward to continuing our businesses with her. She is definitely a big part of it!
— Viktoria K.
Lyster has been a great asset to my company. She has been with me for years managing my books as well as our Medicaid billing and clients
— Sarah E.
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Bertrand Bookworks


 (303) 522-8816