{
 "protocol": "verified-facts/0.2",
 "key": "us/medicare/additional-rate",
 "label": "Additional Medicare Tax rate (employee only; no employer match)",
 "value": 0.9,
 "unit": "%",
 "period": "2026",
 "effectiveFrom": "2026-01-01",
 "effectiveTo": null,
 "source": "https://www.irs.gov/businesses/small-businesses-self-employed/questions-and-answers-for-the-additional-medicare-tax",
 "quote": "The rate is 0.9 percent.",
 "verifiedDate": "2026-10-03",
 "nextScheduledRefresh": "2026-11-01",
 "status": "fresh",
 "ageDays": 10,
 "maxAgeDays": null,
 "scope": "No wage base limit. Additional Medicare Tax thresholds are statutory (not indexed) and apply to the sum of wages, RRTA compensation and self-employment income.",
 "hash": "sha256:8afc2d9c03082a14e4545a687622c0a96bdd9ca7449d98abcb17f84be712d677",
 "signature": {
  "alg": "EdDSA",
  "kid": "db-2026-10",
  "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..74xFuc9xXaGFVjY1eCd8hyOn6O2dRpUhA1zscsL-5aj3q9ubYtJY9Gd3YtSiT1n5t8cTJuU0Ek8qf2dTnGsyAg",
  "keys": "https://databutler.dev/.well-known/jwks.json"
 },
 "publisher": {
  "name": "Data Butler",
  "url": "https://databutler.dev/"
 },
 "cite": {
  "url": "https://databutler.dev/f/us/medicare/additional-rate",
  "text": "databutler.dev, verified 2026-10-03 against https://www.irs.gov/businesses/small-businesses-self-employed/questions-and-answers-for-the-additional-medicare-tax"
 }
}