Discover / us-tax-calc.x402tookit.com

US Tax Calculators

■ Live

Which US federal income tax bracket a taxable income falls in: marginal rate, bracket edges and dollars to the next bracket.

Listed price
$0.02
Live
1 of the last check
Median response
116 ms
Last checked
2 Nov, 00:23 UTC
In our index since
2 Nov 2026

Endpoint

curl -i https://us-tax-calc.x402tookit.com/bracket-lookup
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
8 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://us-tax-calc.x402tookit.com

  • GET/income-tax-estimateNo price listedUS federal income tax estimate by filing status and year, with bracket breakdown and marginal and effective rates.
  • GET/retirement-limitsNo price listedIRS retirement and HSA contribution limits by year: 401(k), IRA, catch-up, SIMPLE, HSA, with an age-adjusted personal limit.
  • GET/withholding-estimateNo price listedAnnual and per-paycheck take-home from salary: federal withholding (IRS percentage method) plus FICA. State tax not included.
  • GET/bracket-lookupNo price listedWhich US federal income tax bracket a taxable income falls in: marginal rate, bracket edges and dollars to the next bracket.
  • GET/tax-yearsNo price listedWhich US tax years and IRS figures this shelf bundles, with source documents, data date and a staleness warning.
  • GET/standard-deductionNo price listedUS federal standard deduction by filing status and tax year, with age 65 or blind add-ons and the dependent filer limit.
  • GET/payroll-taxNo price listedUS FICA tax on wages (Social Security, Medicare, Additional Medicare) with the employer split, and self-employment tax.
  • GET/capital-gains-taxNo price listedUS long-term capital gains tax: 0/15/20 percent stacked on ordinary taxable income, plus 3.8 percent net investment income tax.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 8 of 8 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/us-tax-calc.x402tookit.com

Recent checks

2 Nov 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean the endpoint was not live. “Live” means it answered with HTTP 402 or another detected payment-challenge signal.2 Nov 2026
All 1 checks
When (UTC)ResultHTTPResponse
2 Nov, 00:23 UTCLive402116ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 2 Nov, 00:23 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for US Tax Calculators?

Its listed price is $0.02.

What payment terms does US Tax Calculators advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is US Tax Calculators listed?

In x402 Bazaar. Superstables first indexed it on 2 Nov 2026.

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