JDF 1820 Discontinued and JDF 1821 Renamed Under HB 25-1159

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Last Updated: May 2026

If you’ve been working on a child support modification and downloaded JDF 1820 (Child Support Worksheet A) before March 2026, stop. That form no longer exists.

The Colorado Judicial Branch discontinued JDF 1820 effective March 2, 2026. The form page on coloradojudicial.gov now redirects to a generic “[Form Discontinued]” notice — no explanation on the page itself, no redirect to a replacement. JDF 1822 (Child Support Guidelines) was also discontinued on the same date. Both removals trace back to House Bill 25-1159, the Child Support Commission Recommendations act that Governor Polis signed on May 31, 2025, with the child support calculation provisions taking effect March 1, 2026.

Here’s what changed, why it changed, and what parents filing child support modifications in Colorado should use instead.

What HB 25-1159 Did to the Worksheet System

Colorado’s child support worksheets used to split into two forms based on a single number: 93 overnights.

JDF 1820 (Worksheet A) applied when one parent had the children for 273 or more overnights per year — the “sole physical care” scenario. JDF 1821 (Worksheet B) applied when each parent had more than 92 overnights — the “shared physical care” scenario. That 93-overnight threshold created what family law practitioners called the “cliff”: a parent going from 92 to 93 overnights could see their support obligation shift dramatically, because the court switched from one worksheet’s formula to an entirely different one.

HB 25-1159 eliminates the cliff. Under the amended C.R.S. § 14-10-115, child support calculations now use a graduated formula that credits every overnight proportionally — no threshold, no sudden jump. That change made the two-worksheet system unnecessary. There’s no reason to maintain separate forms for “sole” and “shared” physical care when the calculation no longer distinguishes between them.

So the Judicial Branch consolidated. JDF 1820 was discontinued. JDF 1821 was renamed from “Child Support Worksheet B” to simply “Support Worksheet” (covering both child support and maintenance calculations). And JDF 1822, which contained the old guidelines schedule, was also removed — the updated schedule is now built into the statute itself.

What Happened to JDF 1821

JDF 1821 is still active, but it’s a different form now in both name and function.

The Judicial Branch renamed it to “Support Worksheet” and updated it to reflect the new calculation methodology under HB 25-1159. The March 2026 revision is currently available as a .docx file only — the PDF version has not been published yet. (The March 2026 Forms Blotter noted that the PDF would follow later, citing late changes from the Child Support Commission. As of our May 24, 2026 monitoring check, the PDF still hasn’t appeared.)

The form page on coloradojudicial.gov now lives at a new URL reflecting the updated name: /self-help-and-forms/self-help-forms/support-worksheet-child-support-maintenance. The old Worksheet B URL structure is gone.

Key differences between the old JDF 1821 and the current version:

• The overnight threshold distinction is removed — the form no longer asks whether the case is “shared physical care”
• The parenting time credit section uses the new graduated formula instead of the old binary calculation
• The income schedule references the expanded range (combined monthly income up to $40,000, up from the prior $30,000 cap)
• A self-support reserve of $1,831.83 per month is factored into the low-income adjustment

One wrinkle worth noting: the Colorado Judicial Branch also directs parents toward the free Colorado Support Calculator (operated by Family Law Software) as an alternative to the paper worksheet. The discontinuation notice for JDF 1820 specifically mentions this calculator. For parents who found the old paper worksheets difficult to complete, the online calculator may be the more practical path — though it produces the same output the court needs.

Three Forms Affected, One Law Behind It All

To keep the full picture clear:

JDF 1820 — Child Support Worksheet A (Sole Physical Care): Discontinued effective March 2, 2026. The form page redirects to a discontinuation notice. Filing this form after that date would mean submitting a document the court no longer recognizes.

JDF 1821 — Support Worksheet (formerly Child Support Worksheet B / Support Worksheet CS & Maintenance): Renamed and revised. The March 2026 version reflects HB 25-1159’s unified calculation. Available as .docx only; PDF pending.

JDF 1822 — Child Support Guidelines: Discontinued effective March 2, 2026. This form contained the guidelines schedule that HB 25-1159 replaced with an updated version codified directly in C.R.S. § 14-10-115.

All three changes stem from the same legislation: HB 25-1159, which the Colorado General Assembly passed during the 2025 session and the Governor signed May 31, 2025. The bill’s child support provisions (Section 2) took effect March 1, 2026. The March 2026 Forms Blotter confirmed the form discontinuations and the JDF 1821 revision effective March 2, 2026.

What This Means If You’re Mid-Filing

Since March 2, 2026, the current support worksheet is JDF 1821 (R: March 2026), and JDF 1820 is discontinued. How HB 25-1159 applies to existing orders and pending cases is explained in the 2026 law guide.

How We Found This

GoFile monitors the Colorado Judicial Branch self-help forms index and the monthly Forms Blotter on a regular schedule. The JDF 1820 discontinuation and JDF 1821 rename were identified during our April 24, 2026 monitoring cycle. The changes were effective as of the March 2026 Forms Blotter but had not been flagged in earlier scans because the April 2026 Blotter (published April 1, 2026) listed no changes to family law forms — the March blotter entries were the ones that mattered here, and they required spot-checking individual form pages to catch.

We verify form status by checking both the Forms Blotter archive and the individual form pages on coloradojudicial.gov. For this update, sources included the March 2026 Forms Blotter, the JDF 1820 form page (now showing the discontinuation notice), the JDF 1821 form page (now reflecting the rename), and the text of HB 25-1159 on leg.colorado.gov.

Confirmed Unchanged Forms

All other tracked family law forms were confirmed present and unchanged as of our April 24, 2026 monitoring check:

JDF 1111 (Sworn Financial Statement), JDF 1403 (Motion to Modify Child Support), JDF 1404 (Stipulation to Modify Child Support), JDF 1405 (Order to Modify Child Support), JDF 1406 (Motion to Modify Parenting Time), JDF 1406 i (Instructions for Parenting Time Modification), JDF 1423 (Stipulation for Parenting Time Modification), JDF 1104 (Certificate of Compliance), JDF 84 (Notice to Terminate Income Assignment), JDF 1801 (Instructions for Income Assignment).

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Sources checked for this post: Colorado Judicial Branch self-help forms index, March 2026 and April 2026 Forms Blotters, individual form pages for JDF 1820 / JDF 1821 / JDF 1822 on coloradojudicial.gov, HB 25-1159 bill text and fiscal note on leg.colorado.gov. Last verified: May 27, 2026.