Legislation: batch A — AK AL AR AZ CO CT DE GA HI IA ID

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legislation/us/states/co/2021a/sb-21-257.md

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+---
+type: "Bill"
+title: "Special Mobile Machinery Registration Exemption"
+description: "The act allows an owner of special mobile machinery who regularly rents or leases the special mobile machinery and who pays specific ownership tax on a monthly basis in an amount equal to 2% of the rental or lease payments for the special mobile machinery to apply to the department of revenue for a registration exempt certificate. The department shall issue the certificate if:The department verifies that the owner regularly has 1,000 or more items of such special mobile machinery in the state;"
+jurisdiction: "us/states/co"
+legislature: "Colorado General Assembly"
+session: "2021A"
+identifier: "SB 21-257"
+citation: "Colorado SB 21-257 (2021A)"
+classification: ["bill"]
+subjects: []
+status: "enacted"
+primary_sponsors: ["Adrienne Benavidez", "Kevin Van Winkle", "Rachel Zenzinger", "Ray Scott"]
+version_count: 8
+action_count: 14
+vote_count: 2
+first_action: "2021-04-29T06:00:00+00:00"
+last_action: "2021-07-07T06:00:00+00:00"
+source: "openstates"
+source_identifier: "ocd-bill/17315fd5-1ca4-44b5-aeef-7cee7ce04e2d"
+source_url: "http://leg.colorado.gov/bills/sb21-257"
+source_hash: "a0f0693525dce66ba1fa7c39362970c77ede5a1a154b4c7f8d012c9e0499d9ac"
+vintage: "2026-07-01"
+source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
+retrieved_at: "2026-07-06"
+confidence: "reported"
+tags: ["legislation", "bill", "us-co"]
+---
+
+# Colorado SB 21-257 (2021A) — Special Mobile Machinery Registration Exemption
+
+The act allows an owner of special mobile machinery who regularly rents or leases the special mobile machinery and who pays specific ownership tax on a monthly basis in an amount equal to 2% of the rental or lease payments for the special mobile machinery to apply to the department of revenue for a registration exempt certificate. The department shall issue the certificate if:The department verifies that the owner regularly has 1,000 or more items of such special mobile machinery in the state;
+
+## Version chain
+
+The bill's text revisions, in order — the diff chain from filing to enrollment.
+
+1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2021a_sb257_h_app_001.pdf)
+2. **Engrossed (05/21/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_eng.pdf)
+3. **Final Act (06/17/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_enr.pdf)
+4. **Introduced (04/29/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_01.pdf)
+5. **Reengrossed (05/24/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_ren.pdf)
+6. **Rerevised (06/07/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_rer.pdf)
+7. **Revised (06/04/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_257_rev.pdf)
+8. **Signed Act (07/07/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2021a_257_signed.pdf)
+
+## Votes
+
+- BILL — **35–0** (pass) · upper
+- BILL — **63–0** (pass) · lower
+
+## Sponsors
+
+- Adrienne Benavidez — primary (person)
+- Kevin Van Winkle — primary (person)
+- Rachel Zenzinger — primary (person)
+- Ray Scott — primary (person)
+
+## Timeline
+
+The legislative action history — every referral, reading, and vote.
+
+- **2021-07-07T06:00:00+00:00** Governor Signed `executive-signature`
+- **2021-06-17T06:00:00+00:00** Sent to the Governor `executive-receipt`
+- **2021-06-17T06:00:00+00:00** Signed by the Speaker of the House
+- **2021-06-17T06:00:00+00:00** Signed by the President of the Senate
+- **2021-06-07T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
+- **2021-06-04T06:00:00+00:00** House Second Reading Special Order - Passed - No Amendments
+- **2021-06-04T06:00:00+00:00** House Committee on Appropriations Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
+- **2021-05-27T06:00:00+00:00** House Committee on Finance Refer Unamended to Appropriations `referral-committee`
+- **2021-05-24T06:00:00+00:00** Introduced In House - Assigned to Finance `introduction`
+- **2021-05-24T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
+- **2021-05-21T06:00:00+00:00** Senate Second Reading Special Order - Passed - No Amendments
+- **2021-05-21T06:00:00+00:00** Senate Committee on Appropriations Refer Unamended to Senate Committee of the Whole `committee-passage, referral-committee`
+- **2021-05-12T06:00:00+00:00** Senate Committee on Finance Refer Unamended to Appropriations `referral-committee`
+- **2021-04-29T06:00:00+00:00** Introduced In Senate - Assigned to Finance `introduction`
+
+## Source
+
+OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/17315fd5-1ca4-44b5-aeef-7cee7ce04e2d`. Confidence: reported (aggregated from official Colorado legislature records).
+