I’m so glad you’re here!
If you ever need support keeping your books organized, gaining clarity on your numbers, or freeing up time to focus on growing your business, I’d love to help support your business.
Kelsey Mastaller
A little bit about me…
With nearly 10 years of experience in accounting, I've navigated both the corporate world and the non-profit sector, honing my skills in managing finances with precision and care. Currently, I work with Numbers in Boxes, supporting women-owned businesses and nonprofits by handling their financial needs, so they can focus on what they do best—growing and making a positive impact. Outside of numbers, I’m an avid traveler, and I bring the same sense of excitement and curiosity to bookkeeping as I do to exploring the world.
Let’s definitely stay in touch!
Kelsey
Bookkeeper / Account Manager
T: (617) 531-7134 ext. 5
E: kelsey@numbersinboxes.com
Beyond bookkeeping.
Insight and strategy for
growth beyond $1M.
For women and nonprofit leaders driving growth and impact—your bookkeeping should rise to meet you. The right bookkeeping partner matters.
Go from drowning in spreadsheets → to Financial Clarity.
Go from drowning in spreadsheets → to Financial Clarity.
Go from money dread → to Feeling Supported, Confident and in Control.
Go from money dread → to Feeling Supported, Confident and in Control.
Go from limited budgets → to Smart, Confident Decisions with ROI and a Plan B In Hand.
Go from limited budgets → to Smart, Confident Decisions with ROI and a Plan B In Hand.
