Show HN: Meihus – Mortgage calculator that shows early payment impact monthly | Hacker News Reader

Show HN: Meihus – Mortgage calculator that shows early payment impact monthly

meihus.com

20 pointsqxsp10 comments

I built it because I needed a way to see how much will my early payments save in interest overtime.

Most of the websites I found are solely made for the US, which does not help my case. So I built one that has a bit more flexibility in terms of loan data.

Any feedback is appreciated.

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I’m building a house and the builder has a number of incentives you can choose between. It led to me making my own (semi-vibe-coded) web app to compare different options and try out different combos (“What if I applied this ‘flex’ money to the house price or if used it to buy down the rate”). It was even easy to wire up Firebase for saving the data so it would sync between my phone and laptop.

One thing missing from this calculator (which doesn’t technically matter for calculating how much faster you’d pay down the mortgage) are HOA, taxes, and insurance. Again, that only matters if you want to calculate the total out of pocket monthly.

Overall, love it. From the US perspective, property value and then down payment is an extra step when you could just start with total mortgage.

For user experience, the grey fields made me think they weren't editable or clickable until I got to the point of adding early payments.

Thank you so much for the feedback.

I live in Europe where mortgages without a down payment are quire rare unless you have an extra house that is at least 75% of the value of the new one you want to purchase. This being the reasoning because of which it is there.

About the whole gray placeholders - you are correct. I will fix that!

Great context about Europe and down payments, thanks for teaching me that.

Fix deployed. I have added an "e.g." label in front of the placeholders.

Cheers once again! I really appreciate it.

Kudos on the quick fix.

Update: A new version is out.

- Meihus now supports translations in 27 languages

- Auto-translation feature based on IP if the language is supported

- Manual language selector

The translations mechanism just looks for the IP country using ipapi, not storing any data about the user IP

my spouse and I used a spreadsheet for this purpose when we were house shopping. it also included local income and property taxes for all of the localities we'd choose to live in so we knew the full financial pros and cons of buying a specific house

because of it, we actually went with an area that had higher property taxes because the lower income taxes made up for it

lovely tool. Would be nice if there is an option to add repayment/reinvestment fee which my bank charges every time I do an early payment.

Thanks!

Thank you!! I really appreciate the feedback.

The fees will come in a later release.

My plan for the next version is to ship translations feature + local currency feature.

Fees are dependent on that and quite complex to implement since each country has it's own + in US each state is different as well.

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