---
type: "Bill"
title: "Income tax credit; modifying required calculation by Tax Commission. Effective date. Emergency."
description: "Income tax credit; modifying required calculation by Tax Commission. Effective date. Emergency."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2024"
identifier: "SB 605"
citation: "Oklahoma SB 605 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Pfeiffer", "Rader"]
version_count: 6
action_count: 25
vote_count: 5
first_action: "2023-02-06"
last_action: "2023-05-05"
source: "openstates"
source_identifier: "ocd-bill/3fd247f0-e8b5-4893-8b7e-7685a30a65d1"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB605&session=2400"
source_hash: "91917a6d38b49e83d50d545d9371cc55d184a129513b9abbb8483f9661b38d83"
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-ok"]
---

# Oklahoma SB 605 (2024) — Income tax credit; modifying required calculation by Tax Commission. Effective date. Emergency.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 INT/SB/SB605 INT.PDF)
2. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 ENGR/SB/SB605 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 ENR/SB/SB605 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 FLR/HFLR/SB605 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 FLR/SFLR/SB605 SFLR.PDF)
6. **SB605 (3-08-23) (RADER) RT FA1.PDF** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2023-24 FLOOR AMENDMENTS/Senate/SB605 (3-08-23) (RADER) RT FA1.PDF)

## Votes

- Third Reading — **41–0** (pass) · upper
- Appropriations: Strike The Title, Motion By Senator Thompson (R) - Adopted — **17–0** (pass) · upper
- Finance — **11–0** (pass) · upper
- Third Reading — **91–2** (pass) · lower
- General Government Committee: Do Pass — **7–0** (pass) · lower

## Sponsors

- Pfeiffer — primary (person)
- Rader — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-02-06** First Reading `introduction, reading-1`
- **2023-02-06** Authored by Senator Rader
- **2023-02-07** Second Reading referred to Finance Committee then to Appropriations Committee `reading-2, referral-committee`
- **2023-02-13** Coauthored by Representative Pfeiffer (principal House author)
- **2023-02-20** Reported Do Pass Finance committee; CR filed `committee-passage`
- **2023-02-20** Referred to Appropriations `referral-committee`
- **2023-03-01** Reported Do Pass as amended Appropriations committee; CR filed `committee-passage`
- **2023-03-01** Title stricken
- **2023-03-09** General Order, Amended
- **2023-03-09** Title restored
- **2023-03-09** Measure and Emergency passed: Ayes: 41 Nays: 0 `passage`
- **2023-03-09** Referred for engrossment
- **2023-03-13** Engrossed to House `passage`
- **2023-03-13** First Reading `introduction, reading-1`
- **2023-03-29** Second Reading referred to General Government `reading-2, referral-committee`
- **2023-04-11** CR; Do Pass General Government Committee `committee-passage`
- **2023-04-26** General Order
- **2023-04-26** Third Reading, Measure and Emergency passed: Ayes: 91 Nays: 2 `passage, reading-3`
- **2023-04-26** Signed, returned to Senate
- **2023-04-26** Referred for enrollment
- **2023-04-27** Enrolled, to House
- **2023-04-27** Signed, returned to Senate
- **2023-04-27** Received from the House
- **2023-05-01** Sent to Governor `executive-receipt`
- **2023-05-05** Approved by Governor 05/05/2023 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3fd247f0-e8b5-4893-8b7e-7685a30a65d1`. Confidence: reported (aggregated from official Oklahoma legislature records).