
Carlos Martinez & Associates
Accounting, tax, payroll and services for international clients, including FIRPTA and ITIN.
For business owners and individuals Explore accounting services →01Entrepreneur · Strategic CFO · Author · U.S. Navy Veteran
28+ years in accounting and financial management, from the U.S. Navy and global corporations to Main Street. Founder of Athena Financial Operating System.

02For accounting firms
I founded Athena Financial Operating System so an accounting firm can run its practice, produce financial reports and deliver advisory from one platform.
Jobs, staff, clients and deadlines organized in one place.
Financial statements and KPI dashboards for every client of the firm.
AI-generated CFO commentary that explains what the numbers are saying.
Turn the monthly report into an advisory conversation with your client.
03Where to start
You need clean books, taxes filed on time, and someone who tells you what your numbers mean.
Accounting and tax →You treat patients all day and still carry the marketing, the finances, and the exit plan.
Dental Business Coach →You want to run the practice, deliver financial reports and offer advisory without jumping between tools.
See Athena →04My story
I started out serving in the U.S. Navy and at the IRS. Then I spent years in corporate finance at institutions like American Express, Standard Chartered Bank, Regency Centers and MasTec.
There I led global consolidations, mergers and acquisitions, audits and software implementations under GAAP, GAAS and IFRS. Today I bring that same discipline to business owners, dentists and accounting firms who need to see their numbers clearly.
Service in the United States Navy.
Experience from inside the federal tax system.
Operations in 75 countries and 45 currencies; audits with the Federal Reserve Bank and the Florida Department of Revenue.
His own accounting and tax firm in Miami.
Athena Financial Operating System, along with Dental Business Coach USA and the nonprofit Small Business Education.
05Companies

Accounting, tax, payroll and services for international clients, including FIRPTA and ITIN.
For business owners and individuals Explore accounting services →
The 12-month Inner Circle program, dental accounting, marketing and practice brokerage.
For dental practice owners Visit →
Practice management, financial reporting, AI-powered financial insights and advisory tools on one platform.
For accounting and tax firms Book a demo →
A 501(c)(3) nonprofit offering free tax, payroll, accounting and growth education to qualifying small businesses.
For small businesses Visit →
Guided, bilingual help to file the Florida Annual Report on time and avoid the $400 late fee.
For companies registered in Florida Visit →06Services
Books kept current and monthly statements you can read.
Individual, corporate, trust and estate filings.
Payroll runs, 1099-NEC and federal and state obligations.
Registration, calculation and periodic filing.
Entity choice, registration and compliance from day one.
FIRPTA, non-resident filings, ITIN and pre-immigration tax planning.
Cash flow, KPIs and strategy without a full-time hire.
What your business is worth and how to prepare it for sale or transition.
07Books

Moving an accounting firm from compliance to advisory.

The dentist’s roadmap to financial freedom.

How to read your own numbers and decide with them.
08Impact
I founded this 501(c)(3) so small businesses can get free education in tax, payroll and accounting.
“Many small people in small places who do small things can change the world.”
Recognition
A free guide to the most common mistakes business owners make and how to avoid them.
09Contact
Choose the type of consultation and we will connect you with the right business.