Show HN: I built a tool to show how much ARR you lose to FX fees
A free, ungated calculator that reveals and provides solutions for revenue leakage from FX fees (Stripe auto-conversion, bank spreads) for founders.
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Product Positioning & Context
AI Executive Synthesis
A free, ungated calculator that reveals and provides solutions for revenue leakage from FX fees (Stripe auto-conversion, bank spreads) for founders.
FixMyFX addresses a tangible financial leakage for SaaS founders, specifically targeting hidden FX fees from payment processors and global SaaS tool payments. The 2-5% revenue loss identified represents a significant, often overlooked, operational inefficiency. This tool highlights a critical market need for financial transparency and optimization, particularly for globalized digital businesses. Its free, ungated nature lowers adoption barriers, potentially establishing a lead generation channel for more comprehensive financial advisory or multi-currency banking solutions. The technical pivot from React to Alpine.js/Tailwind for a lightweight solution demonstrates a pragmatic approach to product development, prioritizing user experience and performance over framework complexity, a trend gaining traction in developer tooling.
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
ARR
FX fees
Stripe auto-conversion fee
multi-currency accounts
React
150kb payload
Alpine.js
Tailwind
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Deep-Dive FAQs
What is I built a tool to show how much ARR you lose to FX fees?
I built a tool to show how much ARR you lose to FX fees is analyzed by our AI as: A free, ungated calculator that reveals and provides solutions for revenue leakage from FX fees (Stripe auto-conversion, bank spreads) for founders.. It focuses on FixMyFX addresses a tangible financial leakage for SaaS founders, specifically targeting hidden FX fees from payment processors and global SaaS too...
Where did I built a tool to show how much ARR you lose to FX fees originate?
Data for I built a tool to show how much ARR you lose to FX fees was aggregated directly from the Hacker News community ecosystem, representing raw developer and early-adopter sentiment.
When was I built a tool to show how much ARR you lose to FX fees publicly launched?
The initial public indexing or launch date for I built a tool to show how much ARR you lose to FX fees within our tracked developer communities was recorded on April 6, 2026.
How popular is I built a tool to show how much ARR you lose to FX fees?
I built a tool to show how much ARR you lose to FX fees has achieved measurable traction, logging over 4 traction score and facilitating 1 recorded discussions or engagements.
Which technical categories define I built a tool to show how much ARR you lose to FX fees?
Based on metadata extraction, I built a tool to show how much ARR you lose to FX fees is categorized under topics such as: ARR, FX fees, Stripe auto-conversion fee, multi-currency accounts.
What are some commercial alternatives to I built a tool to show how much ARR you lose to FX fees?
Our semantic intelligence engine identifies potential commercial alternatives in the SaaS space, such as Monkey Morse, which offers overlapping value propositions.
How does the creator describe I built a tool to show how much ARR you lose to FX fees?
The original author or development team describes the product as follows: "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 ..."
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Hacker News
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