Where does this number come from?

IRS Rev. Proc. 2025-19, §2.01(1) (the annual §223 HSA revenue procedure). We record the primary source for every constant our models use, along with the date a person last checked the value against it — in this case 2026-08-14. A figure without a source and a date cannot be told apart from a stale one.

Facts registry

What is the 2026 hSA contribution limit, self-only coverage?

$4,400

The HSA contribution limit, self-only coverage for TY2026 (calendar year) is $4,400. Source: IRS Rev. Proc. 2025-19, §2.01(1) (the annual §223 HSA revenue procedure). Checked against that source on 2026-08-14.

Where it comes from

Value: $4,400
Applies to: TY2026 (calendar year)
Jurisdiction: United States, federal
Primary source: IRS Rev. Proc. 2025-19, §2.01(1) (the annual §223 HSA revenue procedure)
Last checked: August 14, 2026
Registry id: irs.hsa.self-only-limit.2026

Source corrected 2026-08-14: HSA figures are set by the spring §223 revenue procedure (2025-19 for CY2026), not by Rev. Proc. 2025-32 / Notice 2025-67, which the earlier entry cited. Value unchanged, re-verified against the Rev. Proc. 2025-19 PDF itself.

Not currently consumed by a model

This constant is in the registry with its source and check date, but no model consumes it yet. It is published anyway — a sourced number is useful whether or not we happen to compute with it.

Get it programmatically

The whole registry as JSON — every constant with its value, period, primary source, and check date. No key required.

curl https://worthune.com/api/v1/facts

Questions

Common questions

What is the 2026 hSA contribution limit, self-only coverage?: The HSA contribution limit, self-only coverage for TY2026 (calendar year) is $4,400. Source: IRS Rev. Proc. 2025-19, §2.01(1) (the annual §223 HSA revenue procedure). Checked against that source on 2026-08-14.
Where does this number come from?: IRS Rev. Proc. 2025-19, §2.01(1) (the annual §223 HSA revenue procedure). We record the primary source for every constant our models use, along with the date a person last checked the value against it — in this case 2026-08-14. A figure without a source and a date cannot be told apart from a stale one.
How do I get this figure programmatically?: GET https://worthune.com/api/v1/facts returns the whole registry as JSON — every constant with its value, period, primary source, and check date. No key is required.

Related constants

HDHP minimum annual deductible, family coverage — $3,400
HDHP minimum annual deductible, self-only coverage — $1,700
HDHP maximum out-of-pocket, family coverage — $17,000
HDHP maximum out-of-pocket, self-only coverage — $8,500
HSA contribution limit, family coverage — $8,750

The whole registry · How we maintain it

We maintain this registry against its primary sources on a best-efforts basis and version every change publicly. It is reference information, not tax or financial advice — verify against the primary source before relying on a figure. Spotted something wrong or out of date? Tell us at support@worthune.com.