name: Planomy Tax Data
description: >-
  A free, keyless open-data JSON API publishing the 2026 US retirement and tax figures that drive the
  Planomy local-first personal-finance planner: federal income-tax brackets and the standard deduction,
  FICA rates and the Social Security wage base, the COLA and retirement earnings test, Medicare Part
  A/B/D premiums and deductibles with the full IRMAA tier tables, contribution limits for employer
  plans, IRA, SIMPLE, HSA, HDHP and health FSA, Roth and traditional-IRA phase-outs, Saver's Credit
  thresholds, RMD applicable ages, and a set of state income-tax presets. Two static JSON endpoints —
  a year manifest and one document per tax year — served from a Cloudflare CDN with no key, no
  sign-up and no quota. Its distinguishing feature is provenance: every section carries a source key
  that resolves to a named IRS, SSA, CMS or Federal Register document with the date it was last
  verified, so any single figure can be cited back to the government publication it came from.
url: https://planomy-tax-data.apievangelist.com/apis.yml
image: https://planomy.net/og/og-home.png
created: '2026-07-28'
modified: '2026-08-09'
specificationVersion: '0.21'
tags:
  - tax
  - finance
  - open-data
  - retirement
  - government
  - personal-finance
  - irs
  - social-security
  - medicare
  - json
apis:
- aid: planomy-tax-data:planomy-tax-data-tax-data-api
  name: Planomy Tax Data Tax Data API
  description: Dated, source-attributed US tax and retirement figures.
  humanURL: https://planomy.net/data/
  baseURL: https://planomy.net
  tags:
  - tax-data
  properties:
  - type: OpenAPI
    url: openapi/planomy-tax-data-tax-data-api-openapi.yml
  - type: Documentation
    url: https://planomy.net/data/
  - type: APIReference
    url: https://planomy.net/data/#schema
  - type: LLMsTxt
    url: https://planomy.net/llms.txt
  - type: JSONSchema
    url: json-schema/planomy-tax-data-tax-year-dataset.json
  - type: JSONSchema
    url: json-schema/planomy-tax-data-index.json
  - type: Examples
    url: examples/planomy-tax-data-2026.json
  - type: Examples
    url: examples/planomy-tax-data-index.json
maintainers:
  - FN: Planomy
    email: support@planomy.net
    url: https://planomy.net/data/
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 90
  at: '2026-07-28T15:14:23.864Z'
common:
- type: Overlay
  url: overlays/planomy-tax-data-overlay.yaml
- type: AgenticAccess
  url: agentic-access/planomy-tax-data-agentic-access.yml
- type: DomainSecurity
  url: security/planomy-tax-data-domain-security.yml
- type: Website
  url: https://planomy.net/
- type: Support
  url: mailto:support@planomy.net
- type: Pricing
  url: https://planomy.net/pricing
- type: SignUp
  url: https://planomy.net/app/
- type: TermsOfService
  url: https://planomy.net/legal/terms
- type: PrivacyPolicy
  url: https://planomy.net/legal/privacy
- type: Authentication
  url: authentication/planomy-tax-data-authentication.yml
- type: Conventions
  url: conventions/planomy-tax-data-conventions.yml
- type: ErrorCatalog
  url: errors/planomy-tax-data-problem-types.yml
- type: Lifecycle
  url: lifecycle/planomy-tax-data-lifecycle.yml
- type: Conformance
  url: conformance/planomy-tax-data-conformance.yml
- type: DataModel
  url: data-model/planomy-tax-data-data-model.yml
- type: Vocabulary
  url: vocabulary/planomy-tax-data-vocabulary.yml
- type: Plans
  url: plans/planomy-tax-data-plans-pricing.yml
- type: Components
  url: components/planomy-tax-data-components.yml
- type: MCPServer
  url: mcp/planomy-tax-data-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-08-09'
  status: enriched
  artifacts_added: 23
  pass: local-v1