I built a tool to show how much ARR you lose to FX fees

Details

External ID

47652213

Source

HN

Company

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Product

I built a tool to show how much ARR you lose to FX fees

Website domain

fixmyfx.com

Launched

April 5, 2026

Cohort

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Upvotes

5

Upvotes percentile

0.11182519280205655

Tags

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Fetched at

Sept. 7, 2026, 9:26 p.m.

Updated at

Sept. 7, 2026, 9:26 p.m.

Description

Hey HN,I started my career as a finance manager, transitioned into product management, and now I’m building my own products.Back in my finance days, while managing a £6M budget, I uncovered a £15k leak hiding in plain sight: FX fees.Today, I see solo founders making the exact same mistake. I realised most founders are quietly losing 2-5% of their revenue to what I call the Lazy Tax: - Stripe's ~2% auto-conversion fee on inbound revenue, - plus their local bank's ~3% spread when paying for global SaaS tools (AWS, Claude, Ads).So I built FixMyFX to show founders their exact leak and how to fix it (using multi-currency accounts to achieve a zero FX leak setup).Initially, I had Claude build this in React. Realised a simple calculator shouldn't need a 150kb payload and a complex build process. Threw the React code away and rebuilt it as a single lightweight HTML file using Alpine.js and Tailwind.It's completely free and ungated. I hope it helps you keep a bit more of your hard-earned revenue. Would love your feedback.Tania

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