A summary plan description, or SPD, is the plain-language document ERISA requires employers to give participants explaining how a benefit plan works, including eligibility, benefits, claims procedures, and participant rights. It applies to health, retirement, disability, and most other ERISA plans.
Key takeaways
- New participants must receive the SPD within 90 days of becoming covered.
- A new plan must distribute its SPD within 120 days of becoming subject to ERISA.
- Material changes require a summary of material modifications or an updated SPD.
- The SPD is different from the ACA Summary of Benefits and Coverage.
How summary plan description works
ERISA requires the plan administrator, usually the employer, to give each participant an SPD written so the average participant can understand it (US Department of Labor, ERISA). It must explain who's eligible, how to enroll, what's covered, how benefits are calculated, how to file and appeal claims, when coverage ends, and the participant's ERISA rights.
Timing rules are specific. New participants get the SPD within 90 days of coverage starting. When the plan changes materially, participants get a summary of material modifications within 210 days after the end of the plan year in which the change was adopted, or within 60 days for material reductions in group health benefits. An updated SPD is due every five years if there were amendments, and every ten years otherwise.
Insurance certificates alone often don't meet SPD requirements, which is why many employers use a wrap document that adds the missing ERISA language.
Summary plan description example
A 75-person company buys medical, dental, life, and disability coverage from three carriers. Each carrier provides a certificate of coverage, but none names the employer as plan administrator or describes ERISA rights. The company adopts a wrap plan document and SPD that bundles all four benefits, adds the required ERISA sections, and posts it in the benefits portal. New hires receive it during onboarding, well within 90 days.
Why summary plan description matters for employers
The SPD is the document courts look to when a participant and a plan disagree. Clear, current SPDs protect the plan. Missing or outdated ones invite claims and Department of Labor penalties when a participant requests documents and doesn't receive them on time.
Most small and mid-sized employers don't realize they're plan administrators. With 71% of private industry workers having access to employer medical care in March 2026 (BLS Employee Benefits in the United States, March 2026), almost every employer with benefits has ERISA duties. Benefits software can store and distribute SPDs, and brokers or ERISA counsel can supply wrap documents.
Common summary plan description mistakes to avoid
Relying on carrier certificates alone
They often lack required ERISA content.
Missing the 90-day deadline for new hires
Build SPD delivery into onboarding.
Not updating after changes
Material changes need an SMM or updated SPD on time.
Confusing SPD with SBC
The ACA Summary of Benefits and Coverage is a separate required document.
Summary plan description: questions people also ask
Who must provide a summary plan description?
When must an SPD be provided?
What is the difference between an SPD and an SBC?
Can an SPD be delivered electronically?
Do church and government plans need an SPD?
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HRTally glossary entries are written by people who have run US payroll, benefits, and HR operations, then checked line by line against primary sources such as the IRS, Department of Labor, EEOC, and Bureau of Labor Statistics. Dollar limits and rates are for 2026 unless stated. We review every entry at least twice a year and whenever a rule changes. This page explains general rules and isn't legal or tax advice; state law can differ. Read our editorial standards.
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<blockquote>A summary plan description, or SPD, is the plain-language document ERISA requires employers to give participants explaining how a benefit plan works, including eligibility, benefits, claims procedures, and participant rights. It applies to health, retirement, disability, and most other ERISA plans.</blockquote><p>Source: <a href="https://www.hrtally.com/hr-glossary/summary-plan-description/">HRTally HR Glossary, Summary plan description</a></p>
Written by the HRTally Research Team
Our guides are written and reviewed by people with hands-on US HR, payroll, and HR technology experience. Legal and tax facts are checked against primary sources, such as the Department of Labor, IRS, EEOC, and USCIS, and linked at the end of each guide. Vendors never review or pay for our editorial content.