Tool

Federal IDR deadline calculator

Enter the day open negotiation began and every federal deadline follows. Add the initial payment date to check the window to start.

Runs in your browser. Nothing is sent.
From the notice to award payment due132 calendar days

Business days skip weekends and federal holidays; the day after the trigger is day 1. Each step is assumed on its last permitted day. The 2026 operations rule changes some steps once CMS announces the portal functionality. Not legal advice.

Every federal deadline

  1. Open negotiation
    Open negotiation response due (2026 rule, once applicable)Business day 15 of open negotiation
  2. Open negotiation period ends30 business days from the notice
  3. Federal IDR
    Last day to initiate federal IDRWithin 4 business days after open negotiation ends
  4. IDRE selected (latest)3 business days after initiation
  5. Offers and fees due10 business days after IDRE selection
  6. Payment determination due30 business days after IDRE selection
  7. Cooling-off period ends90 calendar days after the determination

Federal clocks under 45 CFR 149.5109 and the 2026 operations rule.4

How we count

Outer limits, not targets.

01

Business days

Monday to Friday, skipping the eleven federal holidays as observed. The day after the trigger is day 1.

02

Calendar days

Payment (30 days) and the cooling-off period (90 days) run in calendar days from the determination.

03

Latest dates

Each step assumes the one before happened on its last permitted day.

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Sources

  1. 4CMS fact sheet, Federal Independent Dispute Resolution Operations final rule (2026): open negotiation through the federal IDR portal, response by business day 15, eligibility decided within 5 business days of IDRE selection, three batching options. Source
  2. 945 CFR 149.510, determination of out-of-network rates for items and services: open negotiation, IDR initiation, IDRE selection, offers, payment determination, payment and cooling-off period. Source