Clear numbers. Brighter tomorrows.
Accounting that moves your business forward
Expert bookkeeping, accounting and advisory services for ambitious businesses. We handle the numbers, so you can focus on what you do best.

- Your own accountant, not a call centre
- A reply within one business day
- A fixed monthly fee, agreed up front
- Your books, in your name, open to you
Our services
Expert support for every stage of your business.
From day-to-day bookkeeping to strategic advisory, we offer a complete range of services tailored to your goals.
View All Services
Bookkeeping
Accurate, up-to-date records so you always know where you stand.
Learn more Bookkeeping
Accounting
Trusted financial reporting to guide smarter decisions.
Learn more Accounting
Tax Planning
Minimize your tax. Maximize your opportunities.
Learn more Tax Planning
Business Advisory
Strategic advice to help you grow, scale and succeed.
Learn more Business Advisory
Switching accountants
Changing firms is easier than you think.
- 01
We talk
A free, no-obligation conversation about your business, what your current accountant does and what you would like to change.
- 02
You sign one letter
We ask your previous accountant for your files and records, with your signed authorisation. They keep working until we say the handover is complete.
- 03
We take it from there
Your books are set up, checked and reconciled, and your first monthly review is booked. Most businesses are fully moved across within three weeks.
Accounting for a brighter tomorrow
More than numbers — a partner in your success.
At Hartwell & Co., we believe great accounting is about people, not just spreadsheets. Our mission is to give business owners the clarity, confidence and freedom to grow, with expert support at every step.

Real businesses. Real results.
Trusted by business owners like you.

- Businesses supported
- 250+
- Client retention rate
- 98%
- Years of experience
- 15+
- Average reply time
- 24h
The people you will talk to
Three names, three direct lines.
Meet the team
Eleanor Hartwell
Founder & Managing Partner
CPA

Marcus Bell
Senior Accountant, Tax
IRS Enrolled Agent

Sofía Reyes
Bookkeeping & Payroll Lead
QuickBooks ProAdvisor
Questions we hear a lot
Before you switch.
What does it cost to switch accountants?
Nothing extra. We ask your previous accountant for your files with your signed authorisation, and we set up your books ourselves. You pay the same fixed monthly fee we quoted you, from the month we start.
How long does the handover take?
Most businesses are fully moved across within two to three weeks. In the meantime your previous accountant keeps working, so nothing is missed and no deadline slips.
What happens if I am audited?
We prepare the response, attend with you and speak to the authority on your behalf for every return we prepared. Representation is included in our tax planning and accounting fees.
Which software do you work with?
QuickBooks Online and Xero are our standards. If you already use something else we will tell you honestly whether it is worth changing before we start.
Do you work in Spanish?
Yes. Every client has a Spanish-speaking and an English-speaking contact, and this whole site, our reports and your monthly review are available in both languages.
Let's build a brighter tomorrow
Ready to take control of your finances?
Book a free, no-obligation consultation and discover how we can support your business.