Spend Less Time on Books, More on Your Business — Small Business CPAs in Austin, TX
Mainstay handles the taxes, accounting, and planning that keep Austin small businesses growing — from LLC setup to year-round strategy — so you can get back to running the shop.
Built for Small Business Owners
🤠 Austin Small Business ✓ Licensed CPAs 📅 Year-Round Planning
The CPA Firm Austin's Small Businesses Grow With
Mainstay was founded in 2008 to give Austin's small businesses what the big firms don't: a real CPA who knows your name, your business, and your goals. Eighteen years and 700+ businesses later, we're the firm owners recommend to other owners.
We do the whole picture — business taxes, monthly accounting, financial statements, payroll, and the year-round planning that legally shrinks your tax bill. From day-one LLC setup to a growing team with real complexity, we're the steady hand behind your numbers so you can focus on the business.
- ✓Licensed Texas CPAs · 18 years
- ✓Business tax, accounting & payroll
- ✓Year-round planning, not just filing
- ✓700+ Austin small businesses
Everything Your Business Needs From a CPA
Tax, accounting, payroll, and planning — one firm that sees your whole business.
Business Tax Returns
Federal and Texas returns for LLCs, S-Corps, partnerships, and sole proprietors — accurate, on time, and optimized.
Year-Round Tax Planning
We meet through the year to plan moves that legally cut your bill — before December, not after.
Financial Statements
Clean monthly statements that keep you informed and satisfy banks, investors, and partners.
Entity Structuring
LLC vs. S-Corp done right — the structure that saves you the most in self-employment and income tax.
Payroll Tax Compliance
Payroll filings, quarterly taxes, and W-2s handled so you stay compliant and penalty-free.
New Business Setup
From formation and EIN to accounting setup — start your business on a clean financial foundation.
Why 700+ Owners Trust Us
Not a once-a-year vendor — a year-round partner in your business.
We Plan, Not Just File
Proactive year-round strategy that cuts your tax bill legally — the value shows up before the deadline, not after.
A CPA Who Knows You
The same licensed CPA every time — one who knows your business, answers quickly, and explains it plainly.
Small-Business Specialists
S-Corps, LLCs, payroll, and startup setup are our bread and butter, not an afterthought.
Flat, Predictable Pricing
One clear monthly or annual fee — no hourly surprises, so you can budget with confidence.
Getting Started Is Easy
Three steps to books you trust and a smaller tax bill.
Free Consultation
We learn your business and goals, review where you stand, and give you a clear flat-fee plan.
We Take It Over
Taxes, accounting, and payroll handled cleanly — and we meet through the year to plan ahead.
Grow With Confidence
Clean numbers, a smaller tax bill, and a CPA in your corner as your business grows.
The Structure Most Owners Get Wrong
Filing as a sole proprietor when you should be an S-Corp can cost thousands in self-employment tax every single year. Most owners never find out. We look at how your business actually makes money and build the entity structure and tax plan that keeps the most in your pocket — legally, and reviewed every year as you grow.
- ✓LLC vs. S-Corp done right
- ✓Self-employment tax minimized
- ✓Reviewed every year as you grow
Frequently Asked Questions
Do you work with brand-new businesses?
Absolutely. We help new owners form the right entity, get an EIN, set up clean accounting from day one, and understand their tax obligations — so you start on a solid financial foundation instead of untangling a mess later.
How is a CPA different from just using bookkeeping software?
Software records what happened; a CPA plans what's next. We handle the strategy software can't — entity structure, tax planning, financial statements banks trust, and representation before the IRS. And every client works with a licensed CPA, not a template.
What does it cost?
Most small businesses are on a flat monthly or annual fee based on their needs, quoted up front with no hourly surprises. Your first consultation is free and comes with a clear plan and price.
Should my business be an LLC or an S-Corp?
It depends on how much you earn and how you pay yourself — but for many profitable small businesses, an S-Corp election saves thousands in self-employment tax each year. We'll run the numbers for your specific situation and set it up if it makes sense.
Do you handle payroll too?
Yes. We manage payroll, quarterly payroll taxes, and year-end W-2s and 1099s so you stay compliant and penalty-free — all coordinated with your tax plan.
I'm behind on my business taxes. Can you help?
Definitely. We regularly help owners catch up on late business returns, clean up the books, and get back in good standing with the IRS and the state. The sooner we start, the more options you have.
Ready to Grow With a CPA in Your Corner?
Book your free consultation and see how Mainstay can lower your tax bill and clean up your books.
Book Your Free Consultation
Tell us about your business and we'll be in touch within one business day.
- Visit us901 S Congress Ave, Suite 300, Austin, TX 78704
- Call us(512) 555-0164
- Email ushello@mainstaycpas.com