Tax guides and resources for business owners
Plain-language guides and calculators updated for 2026 tax law. Free, ungated, and no email required.
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S Corp Savings Calculator
Default LLC vs. S corp, with 2026 payroll tax, QBI and real costs
Quarterly Estimated Tax Calculator
Your 2026 payment and due dates, using the IRS safe harbor
Solo 401(k) & SEP‑IRA Calculator
How much you can put away in 2026, and what it saves
Rental Property Depreciation Calculator
Annual and first-year deductions on a residential rental
In-depth guides for owners and investors.
The Complete S Corp Election Guide for 2026
How an S corp election saves tax in 2026, when it's worth it, how to set a reasonable salary, how it interacts with the QBI deduction, and how to file Form 2553 on time.
Read the guideLLC vs. S Corp: Which Structure Is Right for Your Business?
A plain-language comparison of a default LLC and an LLC taxed as an S corp, with 2026 tax math and a simple decision framework.
Read the guideQuarterly Estimated Taxes Explained: 2026 Deadlines and How Much to Pay
Who has to pay estimated taxes, the 2026 due dates, the safe harbor rules that prevent penalties, and how to calculate your payment.
Read the guideSmall Business Tax Deductions You're Probably Missing in 2026
The deductions owners most often leave on the table, updated for 2026: home office, vehicle, health insurance, retirement, QBI, equipment and more.
Read the guideReal Estate Investor Tax Guide 2026: The Strategies Most Investors Miss
Cost segregation, bonus depreciation, real estate professional status, short-term rentals, 1031 exchanges, entity structure and QBI for rental real estate, updated for 2026.
Read the guide2026 Federal Tax Deadlines for Small Business Owners
Every key federal tax date for 2026 in one calendar: estimated taxes, W-2 and 1099 deadlines, partnership and S corp returns, individual and C corp returns, extensions and payroll filings.
Read the guideStarting a Business in the U.S. as an Immigrant: The Financial Essentials
EINs and ITINs, choosing an entity, banking, bookkeeping and the tax obligations that cost immigrant entrepreneurs the most in their first year.
Read the guideTax Credits for Families and Small Businesses
Child, dependent care, education and small business credits that are frequently unclaimed.
Open PDFRunning the business.
Bookkeeper vs. Controller vs. Fractional CFO: Which Does Your Business Need?
What bookkeepers, controllers and fractional CFOs actually do, what each costs in 2026, and the revenue stage where each pays for itself.
What a Fractional CFO Does for an Owner-Led Business
Why agencies, practices, firms and contractors feel cash-poor while profitable, and what a fractional CFO fixes first.
How Much Does Bookkeeping Cost for a Real Estate Investor?
What property-level bookkeeping should cost in 2026, what drives the price, and when monthly or quarterly books make sense.
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