Avoid guessing on rental cash flow: the IRS failure-to-file penalty can be 5% of unpaid tax per month, up to 25%.

What you get: The .xlsx you own, holding your property's numbers.
Updated 2026-09-25 · ReadyStack
Avoid guessing on rental cash flow: the IRS failure-to-file penalty can be 5% of unpaid tax per month, up to 25%.
| Effective monthly rent after vacancy | - |
| Annual effective gross rent | - |
| Annual property management fee | - |
| Annual operating expenses | - |
| Annual mortgage payments | - |
| Annual cash flow before tax reserve | - |
| Estimated annual tax reserve | - |
| Annual cash flow after tax reserve | - |
| Monthly cash flow after tax reserve | - |
| Break-even monthly rent | - |
| After-tax cash flow margin | - |
Everything updates as you type. Nothing is uploaded. This runs in your browser.
The .xlsx you own, holding your property's numbers. The free calculator tells you this year's figure and then it is gone — Schedule E is filed every April against the same basis, and your preparer will ask how you split land from building. The file keeps that split, your improvement additions and yo
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The rule this file carries is statutory: unrecaptured Section 1250 gain is taxed at a maximum 25% rate (IRC §1(h)(1)(E)), and IRS Publication 527 sets residential rental property at 27.5 years, straight line. On the default number
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