---
type: "Bill"
title: "Income Tax - Subtraction Modification - Classroom Supplies Purchased by Teachers"
description: "Income Tax - Subtraction Modification - Classroom Supplies Purchased by Teachers"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2018"
identifier: "HB 671"
citation: "Maryland HB 671 (2018)"
classification: ["bill"]
subjects: ["Taxes - Sales and Use", "Education", "Equipment", "Exemptions", "Income Tax", "Sales and Use Tax", "Teachers"]
status: "enacted"
primary_sponsors: ["Patterson"]
version_count: 1
action_count: 16
vote_count: 3
first_action: "2018-01-31"
last_action: "2018-05-08"
source: "openstates"
source_identifier: "ocd-bill/67a802ba-4fd4-4782-ba9a-682bf9713317"
source_url: "http://mgaleg.maryland.gov/webmga/frmMain.aspx?id=HB671&stab=01&pid=billpage&tab=subject3&ys=2018rs"
source_hash: "9ecf7099037a387f8bf7b12f6c0efca203daa6ca7b3cfb6006dd9931797a20f1"
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-md"]
---

# Maryland HB 671 (2018) — Income Tax - Subtraction Modification - Classroom Supplies Purchased by Teachers

## Version chain

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

1. **Bill Text** (committee substitute) — [source](http://mgaleg.maryland.gov/2018RS/bills/hb/hb0671f.pdf)

## Votes

- On Third Reading — **135–0** (pass) · lower
- On Third Reading and Final Passage (Hse concurred) — **137–0** (pass) · lower
- On Third Reading — **44–0** (pass) · upper

## Sponsors

- Patterson — primary (person)
- A. Washington — cosponsor (person)
- Afzali — cosponsor (person)
- Ali — cosponsor (person)
- Buckel — cosponsor (person)
- C. Howard — cosponsor (person)
- Carey — cosponsor (person)
- D. Barnes — cosponsor (person)
- Ebersole — cosponsor (person)
- Hornberger — cosponsor (person)
- Kaiser — cosponsor (person)
- Long — cosponsor (person)
- Luedtke — cosponsor (person)
- M. Washington — cosponsor (person)
- Mosby — cosponsor (person)
- Reilly — cosponsor (person)
- Rose — cosponsor (person)
- Shoemaker — cosponsor (person)
- Simonaire — cosponsor (person)
- Tarlau — cosponsor (person)
- Turner — cosponsor (person)
- Walker — cosponsor (person)
- Wilkins — cosponsor (person)

## Timeline

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

- **2018-01-31** First Reading Ways and Means `referral-committee`
- **2018-02-01** Hearing 2/21 at 1:00 p.m.
- **2018-03-16** Favorable with Amendments Report by Ways and Means `committee-passage-favorable`
- **2018-03-16** Favorable with Amendments {445760/1 Report Adopted `committee-passage-favorable`
- **2018-03-16** Second Reading Passed with Amendments
- **2018-03-19** Third Reading Passed (135-0) `passage`
- **2018-03-19** First Reading Budget and Taxation `referral-committee`
- **2018-03-21** Hearing 3/28 at 1:00 p.m.
- **2018-04-05** Favorable with Amendments Report by Budget and Taxation `committee-passage-favorable`
- **2018-04-05** Favorable with Amendments {839934/1 Report Adopted `committee-passage-favorable`
- **2018-04-05** Second Reading Passed with Amendments
- **2018-04-06** Third Reading Passed with Amendments (44-0) `passage`
- **2018-04-07** House Concur - Senate Amendments
- **2018-04-07** Third Reading Passed (137-0) `passage`
- **2018-04-07** Passed Enrolled
- **2018-05-08** Approved by the Governor - Chapter 466 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/67a802ba-4fd4-4782-ba9a-682bf9713317`. Confidence: reported (aggregated from official Maryland legislature records).