FeeHistory · the dated record of overwrite-in-place gov fees & rates

Boulder, CO city sales-tax rate — dated history

Current value · Boulder, CO
3.86%
Observed 2026-06-22 · tracked since 2026-06-22 · 1 observation
Source: https://data.colorado.gov/resource/nd6a-59yu.json?$where=starts_with(unnamed_column,'Boulder')&$limit=1 · hash 89f52809cb9b46f65288b9ce801b2ef9e4da92993dd5041abfe24bbae55fb61b
Alert me the moment sales tax rate changes →

Change log

No change observed yet since we began tracking on 2026-06-22. The day this value moves, the change is logged here with its date + hash and a forward alert fires. This is the honest day-1 state: the dated record starts now and compounds.

Recent observations (hashed)

ObservedValueSHA-256 (truncated)
2026-06-223.86%e24db5fe9a36cf28…

Each row is a dated, hashed snapshot — provenance an appeal firm, permit expediter or audit/refund shop can cite when the agency has already overwritten the number. Full signed history via the diff API.

Why this page exists

Colorado DOLA — self-collected home-rule city sales-tax rate (Socrata open data) publishes this value and overwrites it in place when it changes. There is normally no public way to learn what it was last year. We keep every observation, so the answer accrues here.