Fractional CFO | Denver, Colorado
Strategic Financial Leadership, Right-Sized for Your Business
Senior finance experience for small business owners and real estate investors, without the full-time hire. We build the cash flow forecasts, reporting, and models that show you what is actually happening and what to do next.
No pressure and no sales pitch. Just a conversation about your numbers.

20+ years
In commercial real estate finance: lending, asset management, and private equity
Former CFO
Led the finance function for a Colorado university
UChicago
Economics degree from the University of Chicago
10+ years
As a hands-on residential real estate investor
What we do
Sharper numbers, stronger decisions.
Pick the level of help that fits. Some clients want an ongoing finance partner. Others need one model built right.

Fractional CFO
Senior-level strategy and oversight without a full-time salary. Cash flow forecasting, budgets, board-ready reporting, and a second set of eyes on the big decisions.

Custom Spreadsheets and Dashboards
Models and dashboards built around how your business actually runs, so updating your numbers takes minutes instead of hours.

AI Integration and Training
Practical automation for reporting and back-office work, plus the training your team needs to keep it running without us.

On-Demand Workshops
Mastering Your Business Finances and From Controller to CFO, recorded and ready to watch on your schedule, each with the slide deck and an Excel toolkit.
Who we help
Two kinds of clients, one standard of rigor.
Small business owners
You are profitable on paper, but cash still feels tight. You want to know whether you can afford to hire, raise prices, or expand before you commit, not after.
- Cash flow forecasts you can plan around
- Monthly reporting a non-numbers person can read
- Pricing, hiring, and budget decisions backed by real math
Real estate investors
You want to know whether a deal pencils before you make an offer, and how your portfolio is really performing once every expense is counted.
- Deal analysis: cap rate, cash-on-cash, and cash flow
- Portfolio tracking and landlord budgeting
- One-on-one coaching from an active investor
From the blog
Latest articles
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Chart of Accounts Cleanup: The Half-Day Fix (2026)
A chart of accounts cleanup takes half a day and makes every report usable. Get the structure, a worked 2026 example, and…
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House Hacking with Roommates: How I Lived for Free and Bought My First Rental Property
I bought a single-family home, rented the spare rooms, and lived almost mortgage-free. Here’s the house hacking playbook that funded my first…
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Cost of Hiring an Employee in Denver: The 2026 Math
What a Denver hire actually costs in 2026: the local minimum wage, employer payroll taxes, Colorado unemployment and FAMLI premiums, workers’ compensation,…
Client stories
What clients say
“Erin took a complex reporting process that used to eat up hours of my time and built a spreadsheet that now takes mere minutes to update. What used to be one of the most tedious parts of my week is now practically effortless. She understood exactly what I needed and delivered a solution that just works.”
Mark Dally, Founder, Asset Accountant
“Simply Spreadsheets transformed how we manage our finances at GC Counsel. Erin took our budgeting and cash flow processes and turned them into clear, organized systems that actually make sense. She’s responsive, reasonable, and has a real gift for making complex financial data digestible for non-numbers people.”
Joe Whitehead, Esq., Owner, GC Counsel

“Numbers tell stories. We help you read them. With 20+ years in senior finance, from owner-operated small businesses to institutional real estate, we bring the same hands-on rigor whether you run a restaurant or a rental portfolio.”
Erin Onsager, Founder
Prefer to write first? Send us a message and we will follow up within one business day.
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