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Calculators

Free tools built by the CPA who prepares the returns. Each one lists the rules and figures it uses.

All 12 calculators

Most used

S-Corp vs. Sole Proprietor ›1099 Estimated Tax Planner ›Withholding Checkup ›
When a tool isn’t enoughEvery calculator links to the service or model that covers the rest of the question.Send an inquiry

Models

Excel workbooks for reporting and tax analysis. Licensed per user or firm; you own your copy.

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What’s inside

21 tabs, 28,550 formulas (FRP) ›§1374 and LIFO recapture (C→S) ›Pre- and post-2025 §1202 rules ›
Rather have me run it?I can build the reporting package or run the analysis as an engagement.Send an inquiry
Calculators›Real estate›Rental Property Analyzer
RE-01Inputs: Price, rent, expenses, financingEstimate only

Rental property analyzer

Run the numbers on a rental before you make an offer — cap rate, cash flow, cash-on-cash, and the debt-coverage ratio lenders care about. Then print a clean one-page summary.

Thinking about buying or holding rentals? Cost segregation, entity structure, and depreciation can change these numbers a lot — let's talk.
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Estimate only, for illustration — not investment, tax, or financial advice, and not a substitute for due diligence or an appraisal. Cap rate is net operating income divided by purchase price; cash-on-cash is annual pre-tax cash flow divided by cash invested; DSCR is net operating income divided by annual debt service. This is a pre-tax operating analysis: it excludes income taxes, depreciation and cost-segregation benefits, capital reserves, closing-cost financing, appreciation, and loan paydown. Mortgage payment assumes a fixed-rate, fully amortizing loan. Verify every figure independently before making an offer. Confirm with a CPA and your own advisors.