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Products that do what https://www.rentlatefee.com does

Rent late fee calculator for all 50 states + dc

  1. 1CF

    I wanted to share a simple web app I created recently, which lets you estimate income taxes owed in the US: https://taxsim.app All the calculations occur directly in the browser, and are powered by a Fortran program that has been converted to WASM using emscripten. This calculator was originally developed in the 1970s [1] by the non-profit National Bureau of Economic Research. NBER has been maintaining this F77 codebase for the last 50 years, and uses it primarily for academic research on tax policy. The Fortran source code itself is over 1MB of text, because it codifies both…

    2022

  2. 2

    AI-powered rent roll standardization for CRE investors

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  3. 3RD

    I created https://www.howmuchrent.com last Friday to help bring this kind of transparency to Ireland, allowing people to submit their rents. Would love to get any HN feedback on the idea/website.

    2023 · howmuchrent.com

  4. 4AI

    historically, rentals in NYC have been pretty wild. the median 1BR in West Village as of July 2025 cost $5,750/month. about a month ago, NYC passed a law to ban broker fees which many predicted would have increased rents. I realized I had access to some original data from a previous project so I built a dashboard to help me visualize the changes and see for myself. you can filter by neighborhoods, bedrooms, original source where the rentals were posted, and select a timeframe. this is still a work in progress, so apologies in advance for any issues you encounter. I would love any…

    2025 · leaseswap.nyc

  5. 5

    Calculate transaction fees for Paypal, Stripe & Payoneer

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    See how much you owe to state and federal in 7 sec

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  7. 7

    Free lease break calculator using your state's actual law

    May 2026 · newsbreakonline.com

  8. 8
    Marble99

    Virtual rental management for long-term rentals

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    Calculate if buying or renting saves you more money

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    Calculate your quarterly tax payment in 7 seconds

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    Find Your Ideal Rent Budget in Seconds

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  12. 12RF

    Median rent by city and ZIP, bedroom breakdowns, and trend data. No account, no paywall, no upsell. Covers all 50 states, 4,000+ cities down to the ZIP code level with a Leaflet map across 7,700+ ZIP markers. What data would be most useful to add here?

    Mar 2026 · rentdatanow.com

  13. 13

    Free calculators to analyze any rental deal in seconds

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  14. 14

    Making fair rent calculations as simple as breathing

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    Turn your rent roll and T12 into a ranked 90-day NOI plan

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    Free Legal Cost Calculators for All 50 States

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  17. 17

    Don't sign a lease you'll regret. AI legal check for renters

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  18. 18

    Know what your lease really says, in 60 seconds

    Jul 2026 · leasesnipe.com

  19. 19

    See exactly when buying beats renting. No lead forms.

    Jun 2026 · rentingvsbuycalculator.com

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    Rental market data for every U.S. city & ZIP code

    Mar 2026 · rentdatanow.com

  21. 21RV

    2020 · rentvsbuy.house

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    Know your apartment before you sign the lease

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    Multifamily Rent Roll and T12 Insights in under a minute!

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    Renting a flat and not a lawyer? Check Your Rental Agreement

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