---
type: "Bill"
title: "Child Support - Shared Physical Custody"
description: "Child Support - Shared Physical Custody"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2020"
identifier: "SB 579"
citation: "Maryland SB 579 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Sydnor"]
version_count: 3
action_count: 12
vote_count: 2
first_action: "2020-01-31"
last_action: "2020-05-08"
source: "openstates"
source_identifier: "ocd-bill/4838a5df-4742-456f-a1c0-b56d519e1a86"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0579?ys=2020RS&search=True"
source_hash: "bf38b0ad1048740f2b9e6b09a300c4bf64f007057b91a0b29c0f663afc1e840b"
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 SB 579 (2020) — Child Support - Shared Physical Custody

## Version chain

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

1. **Chapter - Child Support - Shared Physical Custody** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/Chapters_noln/CH_143_sb0579t.pdf)
2. **First - Child Support - Shared Physical Custody** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/sb/sb0579f.pdf)
3. **Third - Child Support - Shared Physical Custody** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/sb/sb0579t.pdf)

## Votes

- On Third Reading — **46–0** (pass) · upper
- On Third Reading — **131–0** (pass) · lower

## Sponsors

- Sydnor — primary (person)

## Timeline

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

- **2020-01-31** First Reading Judicial Proceedings `referral-committee`
- **2020-01-31** Hearing 2/06 at 1:00 p.m.
- **2020-02-17** Favorable Report by Judicial Proceedings `committee-passage-favorable`
- **2020-02-18** Favorable Adopted `committee-passage-favorable`
- **2020-02-18** Second Reading Passed
- **2020-02-20** Third Reading Passed `passage`
- **2020-02-21** Referred Judiciary `referral-committee`
- **2020-03-14** Favorable Report by Judiciary `committee-passage-favorable`
- **2020-03-14** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2020-03-16** Third Reading Passed `passage`
- **2020-03-18** Returned Passed
- **2020-05-08** Enacted under Article II, Section 17(c) of the Maryland Constitution - Chapter 143 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/4838a5df-4742-456f-a1c0-b56d519e1a86`. Confidence: reported (aggregated from official Maryland legislature records).