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JoinCalc
financial calculators for US & UK tax, mortgage, retirement
JoinCalc is a free collection of financial calculators for US and UK users β no sign-up, no ads interruption, all calculations happen in your browser. Includes: ποΈ Stamp Duty Calculator (UK 2026) π Capital Gains Tax (US & UK) π¦ Inheritance Tax (UK IHT & US Estate Tax) π₯ FIRE Calculator π Mortgage Affordability π§ 401k & UK Pension Calculator πΌ Salary Take-Home (US, UK, CA, AU) π Loan Calculator π° Dividend Income π Compound Interest All rates updated for 2026.
Hi Product Hunt! π
I built JoinCalc because I was frustrated with financial
calculators that were either paywalled, full of ads, or
outdated.
JoinCalc is completely free β no sign-up, no paywalls,
all calculations happen in your browser so your data
stays private.
Would love your feedback on which calculator you find
most useful, and what I should build next!
β joincalc.com
No comment highlights available yet. Please check back later!
About JoinCalc on Product Hunt
βfinancial calculators for US & UK tax, mortgage, retirementβ
JoinCalc was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #56 on the daily leaderboard. JoinCalc is a free collection of financial calculators for US and UK users β no sign-up, no ads interruption, all calculations happen in your browser. Includes: ποΈ Stamp Duty Calculator (UK 2026) π Capital Gains Tax (US & UK) π¦ Inheritance Tax (UK IHT & US Estate Tax) π₯ FIRE Calculator π Mortgage Affordability π§ 401k & UK Pension Calculator πΌ Salary Take-Home (US, UK, CA, AU) π Loan Calculator π° Dividend Income π Compound Interest All rates updated for 2026.
JoinCalc was featured in Productivity (656.3k followers), Developer Tools (515.9k followers) and Finance (6.1k followers) on Product Hunt. Together, these topics include over 228.3k products, making this a competitive space to launch in.
Who hunted JoinCalc?
JoinCalc was hunted by λ¨μ€μ±. A βhunterβ on Product Hunt is the community member who submits a product to the platform β uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how JoinCalc stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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