Income Tax Brackets

Overview

Income Tax Brackets works by aggregating federal income tax data from official sources including the Tax Foundation and IRS publications. Data covers all filing statuses (single, married filing jointly, married filing separately, head of household) with historical data back to 2000. Add a two-letter state code to get that state's income tax schedule for the year: brackets for single and married filing jointly filers, standard deduction, personal exemption (or the credit some states give instead), and the source table's footnotes for that state. States with no wage income tax, such as Texas and Florida, answer with hasIncomeTax false rather than an error. State tables come from the Tax Foundation's annual State Individual Income Tax Rates and Brackets table, refreshed monthly, from 2023 on; a year that is not published yet falls back to the latest edition, and the response says which year it serves.

Live Test Income Tax Brackets Source →

Formula

One function covers the whole catalog: the first argument names the source, the next are its inputs, and the field after them says which single value lands in the cell. Formulas covers the grammar that applies to all of them.

=VERVE("incometax", A2, "type")

=VERVE.CALL("incometax", A2, "type")

A2 holds the country you are looking up. Drag the formula down and each row resolves on its own.

With literal values

Nothing has to come from a cell — typed values work the same way.

=VERVE("incometax", "US", "type")

=VERVE.CALL("incometax", "US", "type")

Inputs

Required inputs are positional, in the order below, followed by the field. Everything else is passed as a "name", value pair after that — the same shape as SUMIFS. Premium inputs are accepted on every plan but only take effect on plans that include them.

Passing an option

=VERVE("incometax", A2, "type", "year", 2024)

=VERVE.CALL("incometax", A2, "type", "year", 2024)

What lands in your sheet

The field — the argument after the inputs — is what makes the formula resolve to one cell. Its value is a dot-path from the table below, so swapping it is how you pull a different value — one formula per column.

Seeing everything at once

Leave the field out and the formula returns the whole response instead: two columns, field name on the left and value on the right, spilling from the cell you typed in.

=VERVE("incometax", A2)

=VERVE.CALL("incometax", A2)

Response fields

Paths are relative to data. Each one is exactly what the field argument accepts, so swapping it is how you pull a different value into a cell. On a plan without a Premium field the cell reads #PREMIUM(field) rather than a value, so a locked field never looks like a real answer.

Filling a whole column

Both platforms make one batched call for a column rather than one request per cell, and both cost the same — 2 credits per row looked up. How you write it differs, because the two runtimes batch at different points.

=VERVE("incometax", A2:A100, "type")

In Google Sheets, give the arguments ranges and the answers spill down from the cell you typed in. Custom functions there run synchronously and in isolation, so dragged cells cannot be coalesced — the range form is how a column becomes one call. The field is required here: a per-row two-column table has nowhere to spill. Use a full column per input (A2:A100, not A2) — a single-cell reference is read as row 1 only and the rest of the column comes back blank.

In Excel, type the formula once and fill down — no range form and none needed, because its runtime is asynchronous and the add-in coalesces the calls a fill produces into a single batched request. Do not hand VERVE.CALL a range: Excel flattens it into positional arguments, so A2:A100 arrives as a hundred separate arguments and the cell reads #ERR rather than filling.

Either way, column A holds your country values and the answers land beside them, one row each, blank rows skipped.

When a cell doesn't fill

A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() will not catch it; test with LEFT(cell, 4) = "#ERR" instead. Error handling covers the rest.

Before the formula works

The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet does not leak it and a collaborator without access simply sees the last calculated values.

1. Install the add-in for Google Sheets or Excel.
2. Open the side panel and sign in, or paste a key from your dashboard.
3. Type the formula above into any cell.

Use cases

Payroll Withholding Engine

Payroll software matches employee gross pay against standard deductions and marginal rates to compute accurate federal tax withholdings.

Retirement Income Planning

When modeling pension and 401(k) drawdowns, financial advisory tools test projected distributions against married filing jointly brackets.

Mortgage Underwriting Review

Determine net monthly borrower income by evaluating gross salaries against federal deduction thresholds and rate tiers during credit assessments.

Tax Audit Reviews

Accounting platforms audit amended tax returns by checking declared earnings against historical rate bands and deduction amounts.

Other ways to use Income Tax Brackets

Set up Income Tax Brackets on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.

Related

More in Finance: