Support

RentBuy.org is provided by PORTMAN LLC.

For questions, feedback or a calculation that does not look right, email admin@rentbuy.org.

Help with the calculator in ChatGPT and Claude

If the calculator cannot connect, close and reopen its panel. You can continue using the local calculations while disconnected, or use the website calculator. To add RentBuy.org to Claude or another MCP client, see Use the calculator from Claude.

When reporting a problem, describe the steps, the expected result and the result you saw. Share only the scenario inputs needed to reproduce it; do not send account credentials or bank information.

Understanding results

The comparison covers 30 years in USD. Annual net worth charts are before selling costs; the headline includes selling costs at year 30. Assumptions such as investment return and home appreciation are estimates. Monte Carlo is a sensitivity analysis, not a market forecast.