LAUNCH·INDEX

OpenTaxRate

open-source US sales tax rates by street address

FINTFinance & Fintech·HNShow HN

Breakout launch

Beat 91% of Show HN launches that day

#14 of 157 on Oct 28

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7+1 (+16.7%)

points · traction gained Oct 30, 16:20 UTC → Oct 31, 15:35 UTC

Still tracked: re-read by each daily run while under ~168h old (window closes ~Nov 4, 17:40 UTC).

comments · buzz 0 in latest interval

5d

listed Oct 28, 17:40 UTC

Traction (points) over time

0510Oct 29Oct 30Oct 31ListedOct 29, 16:38 UTC · 5 points · 0 comments · 23h after listingOct 30, 16:20 UTC · 6 points · 2 comments · 47h after listingOct 31, 15:35 UTC · 7 points · 2 comments · 70h after listing
3 readings (one per daily ingest run). Dots are recorded values; lines just connect them — nothing in between is measured.

Key statistics

Traction
7points
Comments
2
Rank in FINT this week
#3of 30 HN
Rank overall this week
#74of 998 HN
Sector hit rate
7.1%2/28 · 7D
Traction line
Below10+ points
First reading
5Oct 29, 16:38 UTC
Last reading
7Oct 31, 15:35 UTC
Readings
3over 70h

Grades · each graded against other Finance & Fintech launches from the same source

Momentum

A

+1 points

Traction gained in the latest daily interval

Better than 96% · vs 26 still-tracked Finance & Fintech · Show HN launches

Velocity

A

0.15 points/h

Votes per hour since listing (age capped at 48h)

Better than 91% · vs 80 Finance & Fintech · Show HN launches, last 30 days

Engagement

—

—

Comments per 10 points

Needs 10+ points; below that the ratio is mostly noise

Staying Power

—

—

Votes at last reading ÷ votes at first reading

Needs 10+ points and readings from two runs

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OpenTaxRate on Launch Index
<a href="https://launchindex.ai/product/65316" target="_blank"><img src="https://launchindex.ai/badge/65316" alt="OpenTaxRate on Launch Index" height="54" /></a>

Others in this sector · top Show HN launches in Finance & Fintech by traction, last 7 days

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Data as of Oct 31, 2026, 3:03 PM UTC. Sector comes from keyword rules on the title and tagline and can be wrong. How it works