US federal + state quarterly estimated tax estimates, SE tax, and quarterly payment due dates.
Scored across 2 tools
The two tools target clearly different things: one performs a tax computation from inputs, the other returns a static schedule of due dates. There is no plausible way to confuse them, and each description states its output unambiguously.
Both names follow the same camelCase verb_noun pattern (estimateQuarterlyTax, getPaymentCalendar). One is an estimate/action verb and the other a get/fetch verb, but the convention is uniform and predictable.
Two tools is thin even for a narrow single-purpose calculator server. The surface covers the two obvious needs, but a third tool (e.g., listing supported states/filing statuses or annualized summary) would likely be expected.
The domain is quarterly estimated tax estimation, and the surface covers both the calculation and the deadline lookup, which are the two core workflows. Minor gaps remain: no tool to enumerate supported states, tax years, or filing statuses, and no way to get federal-only or state-only breakdowns.
Estimate US federal + state quarterly estimated tax payments for a self-employed person. Given annual Schedule C net profit, filing status, two-letter US state code, tax year, and whether the §199A QBI deduction applies, returns annual federal income+SE tax, rough state income tax, SE tax, combined total, the per-quarter installment amount (4 equal payments), and a deep link that opens the site calculator pre-filled with these inputs. Read-only calculation; no data is stored.
Inputs: state (required), taxYear (required), netProfit (required), filingStatus (required), +1 more.
Return the 4 federal quarterly estimated tax payment due dates for a tax year (Apr/Jun/Sep 15 and Jan 15 of the following year, rolled forward past weekends and IRS holidays to the real deadline), plus a deep link to the site. Read-only.
Inputs: taxYear (required).
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