About one in five workers eligible for the Earned Income Tax Credit never file for it, forfeiting a benefit that can reach $8,046 for families with three or more qualifying children in tax year 2025. IRS data for tax year 2022 show a national participation rate of just 80.8 percent, meaning roughly 19.2 percent of eligible taxpayers left the credit on the table. With a new filing season approaching, billions of dollars in refundable credits continue to go unclaimed by the low- and moderate-income households they were designed to help.
Why the 19.2 Percent EITC Gap Demands Attention Now
The gap between eligible workers and actual claimants is not a rounding error. At a national participation rate of 80.8 percent for tax year 2022, millions of qualifying households skipped a credit that directly reduces what they owe or increases their refund. For a family with three or more children, the maximum credit for tax year 2025 stands at $8,046, according to Revenue Procedure 2024-40. That figure rises to $8,231 for tax year 2026 under Revenue Procedure 2025-32, reflecting automatic inflation adjustments. These are not trivial sums for households earning under the EITC income thresholds, where a few thousand dollars can determine whether rent, utilities, and basic necessities are fully covered.
The IRS already has a mechanism to reach some of these non-claimants. When agency records suggest a taxpayer filed a return but did not claim the Earned Income Credit despite apparent eligibility, the IRS sends what it calls a CP27 notice. The notice tells the taxpayer they may qualify, summarizes the basic rules, and directs them to review their information and, if appropriate, file an amended return. This targeted outreach demonstrates that the agency can identify at least a portion of the missing filers using existing data.
The question is whether scaling that kind of outreach could meaningfully shrink the 19.2 percent non-claim share. If the IRS expanded CP27-style notices to a larger pool of apparent non-claimants identified through linked Census and tax data, pushing the participation rate above 85 percent within two filing seasons is plausible on paper. Yet no public IRS data quantify how many CP27 recipients actually go on to claim the credit, making it impossible to model the precise effect of broader outreach. Without that conversion rate, policymakers are left to infer effectiveness from overall participation trends rather than direct evidence about the notice itself.
IRS Data and the $8,046 Credit Many Families Miss
The 80.8 percent participation figure comes from the IRS’s own linked analysis of American Community Survey data and federal tax records. The agency’s state-by-state tables reveal wide variation in uptake across the country, with some states falling several points below the national average. Because the Earned Income Tax Credit is federal, these gaps point to differences in awareness, filing assistance, and local outreach rather than differences in the underlying rules.
What the public data do not show is just as important as what they reveal. The participation tables do not break out the demographic or income-level characteristics of non-claimants in granular detail. That leaves open questions about which groups are most likely to miss out: workers with fluctuating hours, families with informal caregiving arrangements, people with limited English proficiency, or those moving in and out of the labor force. More detailed disclosure could help state agencies and community organizations tailor campaigns to the households that are most often overlooked.
The credit amounts themselves are adjusted annually for inflation, which explains why the maximum benefit continues to inch upward. For tax year 2025, the maximum EITC ranges from a few hundred dollars for workers without qualifying children up to $8,046 for those with three or more. The value phases in as earnings rise, then plateaus, and eventually phases out once income exceeds the upper threshold. For many families in the middle of that range, the credit represents the single largest cash transfer they receive all year.
Missing that benefit has consequences beyond a smaller refund. Research has linked the EITC to improved child well-being, higher employment among single parents, and modest gains in long-term earnings. When nearly one in five eligible workers does not claim the credit, those potential gains are diluted. The unclaimed dollars also represent foregone local economic activity, since refunds are typically spent quickly on necessities in the communities where recipients live.
Closing the EITC gap will require more than one type of intervention. The IRS can continue refining data-driven outreach, including expanding notices when records point to likely eligibility. States and community groups can amplify those efforts with free tax preparation assistance, multilingual materials, and campaigns timed to reach seasonal and part-time workers. Employers, especially in low-wage sectors, can also play a role by reminding employees about the credit and pointing them toward reputable filing help.
As the next filing season approaches, the core policy question is straightforward: how much unclaimed support is acceptable when the infrastructure to deliver it already exists? The 19.2 percent of eligible workers who are not receiving the Earned Income Tax Credit are not invisible in the data, and the maximum benefit-now over $8,000 for larger families-underscores what is at stake. Turning those missed opportunities into claimed credits will test whether administrative systems and outreach strategies can keep pace with the promise written into the tax code.
