About Open Bookkeeping

We’re here to take care of your books, answer your questions, and save you a lot of money.


Full-Service Accounting, Tax Preparation, and CFO Services

We know this stuff is overwhelming, and that’s exactly why we’re here. You’ll have a single expert—a real person—managing your account from Day 1. Best of all, you can be as involved or hands-off as you’d like.

One Dedicated Accountant

Your expert accountant keeps an eagle eye on your books and is here for your questions. No extra charge for that phone call or email. Ever.

Your Tech Managed

Tech is key, and so is managing it well. We keep an eye on your integrations so you know they’re functioning exactly as they should.

Hands-Off or Hands-In

Some people just want the bigger picture, some people want the details. We adapt to you, letting you be as involved (or not) as you want.


Supporting Small Businesses

Open Bookkeeping is a full-service accounting firm based in Austin, Texas. We found our footing here and have since expanded across the country. We love serving small businesses in any industry, whether it’s fine wine or mini golf. You do what you do best, we’ll take care of your books.


Number of monthly bookkeeping clients


Number of small businesses we serve


Years we’ve been in business


Our combined years of experience

Small businesses are the heart and soul of a community. I love serving entrepreneurs because I know I’m helping the neighborhood stay vibrant.


Our Story

An Austin business grounded in community

Mari Ramirez is a staple in the Austin, TX business community. For over 20 years, she’s worked in public accounting, serving small and mid-sized businesses with financial metrics, budgeting, accounting, bookkeeping, tax planning, and achieving long-term growth.

Mari loves working with small businesses because of their impact on the community, something she’s invested in as well. In her own community, Mari is a frequent volunteer and has served on several nonprofit boards. She received the Humanitarian of The Year award from Texas A&M International University, served as Treasurer for both the Foundation for Learning and Youth Travel Education and the Gwenievere Mann Foundation, served as President of Georgetown Art Works, and has helped many organizations file for 501(c)3 status with the IRS.

Mari loves sharing her knowledge to empower business owners to succeed. She wrote a chapter on financial empowerment in “The Better Business Book, Volume 2,” and frequently speaks at events and panels for entrepreneurs. In addition to running Open Bookkeeping, Mari is mother of four with kids ranging from ages 5 to 24, and is one of the 10 founders of Lark & Owl Booksellers, the only indie bookstore in Williamson County.

Meet Our Team

If you’re a business owner in Austin, Mari and her team have probably done your taxes. If they haven’t, you’re going to want to change that. Why? Because Mari and her team are resourceful, personable, and amazingly efficient.

Mari Ramirez

CEO, Founder, & Lead CPA

  • 20 years experience in accounting and bookkeeping
  • Owner of several small businesses
  • Passionate about supporting local businesses and loves the Texas heat

Callie Hall

Account Manager

  • 12 years experience in accounting
  • Bachelor’s Degree in Accounting
  • Avid runner and proud dog mom

Kelly Dobson

Office Manager

  • 12 years experience managing small businesses
  • Bachelor’s Degree from the University of Texas
  • Soccer player and fan

Hania Ostrowski

Account Manager

  • 10 years experience in accounting, bookkeeping, and HR
  • Bachelor’s Degree from the University of Texas
  • Aficionado of dogs, fashion, plants, and Poland

Bonnie Warwick


  • 20 years experience in Small Business Management
  • 15 years experience in bookkeeping
  • Native Texan

Mari and her team make it so I don’t even have to think about my taxes and bookkeeping. They take care of everything!

Open Bookkeeping is hands down, one of the best investments I’ve made in my growing design business. I wish I had made the switch sooner!

Bel Creative, LLC

Our Pricing

Bookkeeping, Tax Prep, and CFO Services starting at $295 a month

Our prices only grow as your business does. We’re in it with you for the long haul.

open bookkeeping schedule a call
open bookkeeping schedule a call

Let’s See if We’re a Good Fit

Schedule a free 30 minute call to feel out if we’re the best solution for your business. We’ll discuss what you need and what package we think is right for you.