Income Tax Brackets is a tool for retrieving US federal income tax bracket data by year. It returns tax rates, income ranges, and standard deductions for all filing statuses.
Try it — live request, no key required
GETapi.apiverve.com/v1/incometax
VerificationFormat
No key required to try it. Get a key to use it in your app.
{
"status": "ok",
"error": null,
"data": {
// Income Tax Brackets response payload
}
}
About the Income Tax Brackets API
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.
What people use it for
- Tax Planning
- Use the Income Tax Brackets API to retrieve current and historical tax bracket data for financial planning and tax strategy
- Financial Applications
- Build financial tools and calculators by using the Income Tax Brackets API to get accurate tax rate data for any year
- Education
- Use the Income Tax Brackets API to teach and learn about the US federal income tax system and how brackets have changed over time
- Data Analysis
- Analyze historical tax bracket trends by using the Income Tax Brackets API to retrieve bracket data across multiple years
Ways to call it
One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.
- JSON
- Default REST response
- XML
- Markup format
- YAML
- Human-readable
- CSV
- Tabular export
- GraphQL
- Query language
- MCP
- For AI agents
Beta
New
Other ways to use Income Tax Brackets
Same data, same APIVerve account, same credit balance — one key works on all of them.
Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext
What does the Income Tax Brackets API do?
Income Tax Brackets is a tool for retrieving US federal income tax bracket data by year. It returns tax rates, income ranges, and standard deductions for all filing statuses.
How do I authenticate Income Tax Brackets API requests?
Pass your API key in the x-api-key header over HTTPS. One key works across all 300+ APIVerve APIs — there are no per-endpoint credentials.
How much does the Income Tax Brackets API cost?
Each call spends 2 credits from your shared pool. The free tier includes 200 credits every month, and paid plans add more headroom.
How fast is the Income Tax Brackets API?
Response time depends on the endpoint — the p50 through p99 latency for this API is published on this page. Requests are served over HTTPS through a global edge network.
What response formats does the Income Tax Brackets API support?
JSON by default, plus XML and YAML via the format parameter. GraphQL and an MCP interface for AI agents are available across the catalog.
What HTTP method does the Income Tax Brackets API use?
GET over HTTPS, following standard REST conventions with a consistent { status, error, data } response envelope.
Request parameters — GET /v1/incometax
Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.
Required
| Parameter | Type | Example | Description |
|---|---|---|---|
countryRequired | string | US | The country code (currently only 'US' is supported) length 2-2 |
Optional
| Parameter | Type | Example | Description |
|---|---|---|---|
yearOptionalPremium | integer | 2024 | The tax year to retrieve brackets for. Defaults to the previous year. range 2000-2030 |
curl "https://api.apiverve.com/v1/incometax?country=US&year=2024" \
-H "x-api-key: YOUR_API_KEY"Authentication
Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.
| Header | When | Value |
|---|---|---|
x-api-keyRequired | Every request | Your API key. Header names are case-insensitive, so X-API-Key is the same header. |
AuthorizationAlternate | Instead of the above | Bearer <key> — for clients that only expose bearer auth. Resolves to the same account and the same billing. |
401 is the only auth verdict
A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.
Response — GET /v1/incometax
Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.
{
"status": "ok",
"error": null,
"data": {
"year": 2025,
"country": "US",
"type": "federal",
"brackets": {
"single": [
{
"rate": 0.1,
"min": 0,
"max": 11924
},
{
"rate": 0.12,
"min": 11925,
"max": 48474
},
{
"rate": 0.22,
"min": 48475,
"max": 103349
},
{
"rate": 0.24,
"min": 103350,
"max": 197299
},
{
"rate": 0.32,
"min": 197300,
"max": 250524
},
{
"rate": 0.35,
"min": 250525,
"max": 626349
},
{
"rate": 0.37,
"min": 626350,
"max": 999999999
}
],
"married_filing_jointly": [
{
"rate": 0.1,
"min": 0,
"max": 23849
},
{
"rate": 0.12,
"min": 23850,
"max": 96949
},
{
"rate": 0.22,
"min": 96950,
"max": 206699
},
{
"rate": 0.24,
"min": 206700,
"max": 394599
},
{
"rate": 0.32,
"min": 394600,
"max": 501049
},
{
"rate": 0.35,
"min": 501050,
"max": 751599
},
{
"rate": 0.37,
"min": 751600,
"max": 999999999
}
],
"married_filing_separately": [
{
"rate": 0.1,
"min": 0,
"max": 11924
},
{
"rate": 0.12,
"min": 11925,
"max": 48474
},
{
"rate": 0.22,
"min": 48475,
"max": 103349
},
{
"rate": 0.24,
"min": 103350,
"max": 197299
},
{
"rate": 0.32,
"min": 197300,
"max": 250524
},
{
"rate": 0.35,
"min": 250525,
"max": 375799
},
{
"rate": 0.37,
"min": 375800,
"max": 999999999
}
],
"head_of_household": [
{
"rate": 0.1,
"min": 0,
"max": 16999
},
{
"rate": 0.12,
"min": 17000,
"max": 64849
},
{
"rate": 0.22,
"min": 64850,
"max": 103349
},
{
"rate": 0.24,
"min": 103350,
"max": 197299
},
{
"rate": 0.32,
"min": 197300,
"max": 250499
},
{
"rate": 0.35,
"min": 250500,
"max": 626349
},
{
"rate": 0.37,
"min": 626350,
"max": 999999999
}
]
},
"standard_deduction": {
"single": 15000,
"married_filing_jointly": 30000,
"married_filing_separately": 15000,
"head_of_household": 22500
},
"lastUpdated": "2026-02-07T06:02:41.898Z",
"marriagePenalty": {
"appliesFromRate": 0.37,
"singleThreshold": 626350,
"jointThreshold": 751600,
"jointShortfall": 501100
},
"effectiveRateCurve": {
"single": [
{
"income": 25000,
"taxableIncome": 10000,
"tax": 1000,
"effectiveRate": 0.04,
"marginalRate": 0.1
},
{
"income": 50000,
"taxableIncome": 35000,
"tax": 3961.4,
"effectiveRate": 0.0792,
"marginalRate": 0.12
},
{
"income": 100000,
"taxableIncome": 85000,
"tax": 13613.78,
"effectiveRate": 0.1361,
"marginalRate": 0.22
},
{
"income": 250000,
"taxableIncome": 235000,
"tax": 52262.32,
"effectiveRate": 0.209,
"marginalRate": 0.32
},
{
"income": 1000000,
"taxableIncome": 985000,
"tax": 321468.9,
"effectiveRate": 0.3215,
"marginalRate": 0.37
}
],
"married_filing_jointly": [
{
"income": 25000,
"taxableIncome": 0,
"tax": 0,
"effectiveRate": 0,
"marginalRate": 0.1
},
{
"income": 50000,
"taxableIncome": 20000,
"tax": 2000,
"effectiveRate": 0.04,
"marginalRate": 0.1
},
{
"income": 100000,
"taxableIncome": 70000,
"tax": 7922.9,
"effectiveRate": 0.0792,
"marginalRate": 0.12
},
{
"income": 250000,
"taxableIncome": 220000,
"tax": 38493.56,
"effectiveRate": 0.154,
"marginalRate": 0.24
},
{
"income": 1000000,
"taxableIncome": 970000,
"tax": 282961.15,
"effectiveRate": 0.283,
"marginalRate": 0.37
}
],
"married_filing_separately": [
{
"income": 25000,
"taxableIncome": 10000,
"tax": 1000,
"effectiveRate": 0.04,
"marginalRate": 0.1
},
{
"income": 50000,
"taxableIncome": 35000,
"tax": 3961.4,
"effectiveRate": 0.0792,
"marginalRate": 0.12
},
{
"income": 100000,
"taxableIncome": 85000,
"tax": 13613.78,
"effectiveRate": 0.1361,
"marginalRate": 0.22
},
{
"income": 250000,
"taxableIncome": 235000,
"tax": 52262.32,
"effectiveRate": 0.209,
"marginalRate": 0.32
},
{
"income": 1000000,
"taxableIncome": 985000,
"tax": 326479.9,
"effectiveRate": 0.3265,
"marginalRate": 0.37
}
],
"head_of_household": [
{
"income": 25000,
"taxableIncome": 2500,
"tax": 250,
"effectiveRate": 0.01,
"marginalRate": 0.1
},
{
"income": 50000,
"taxableIncome": 27500,
"tax": 2959.9,
"effectiveRate": 0.0592,
"marginalRate": 0.12
},
{
"income": 100000,
"taxableIncome": 77500,
"tax": 10224.78,
"effectiveRate": 0.1022,
"marginalRate": 0.22
},
{
"income": 250000,
"taxableIncome": 227500,
"tax": 48123.32,
"effectiveRate": 0.1925,
"marginalRate": 0.32
},
{
"income": 1000000,
"taxableIncome": 977500,
"tax": 316955.65,
"effectiveRate": 0.317,
"marginalRate": 0.37
}
]
},
"changes": {
"versusYear": 2024,
"indexingPercent": 2.794,
"bracketShifts": {
"single": [
{
"rate": 0.12,
"from": 11600,
"to": 11925,
"shiftPercent": 2.802
},
{
"rate": 0.22,
"from": 47150,
"to": 48475,
"shiftPercent": 2.81
},
{
"rate": 0.24,
"from": 100525,
"to": 103350,
"shiftPercent": 2.81
},
{
"rate": 0.32,
"from": 191950,
"to": 197300,
"shiftPercent": 2.787
},
{
"rate": 0.35,
"from": 243725,
"to": 250525,
"shiftPercent": 2.79
},
{
"rate": 0.37,
"from": 609350,
"to": 626350,
"shiftPercent": 2.79
}
],
"married_filing_jointly": [
{
"rate": 0.12,
"from": 23200,
"to": 23850,
"shiftPercent": 2.802
},
{
"rate": 0.22,
"from": 94300,
"to": 96950,
"shiftPercent": 2.81
},
{
"rate": 0.24,
"from": 201050,
"to": 206700,
"shiftPercent": 2.81
},
{
"rate": 0.32,
"from": 383900,
"to": 394600,
"shiftPercent": 2.787
},
{
"rate": 0.35,
"from": 487450,
"to": 501050,
"shiftPercent": 2.79
},
{
"rate": 0.37,
"from": 731200,
"to": 751600,
"shiftPercent": 2.79
}
],
"married_filing_separately": [
{
"rate": 0.12,
"from": 11600,
"to": 11925,
"shiftPercent": 2.802
},
{
"rate": 0.22,
"from": 47150,
"to": 48475,
"shiftPercent": 2.81
},
{
"rate": 0.24,
"from": 100525,
"to": 103350,
"shiftPercent": 2.81
},
{
"rate": 0.32,
"from": 191950,
"to": 197300,
"shiftPercent": 2.787
},
{
"rate": 0.35,
"from": 243725,
"to": 250525,
"shiftPercent": 2.79
},
{
"rate": 0.37,
"from": 365600,
"to": 375800,
"shiftPercent": 2.79
}
],
"head_of_household": [
{
"rate": 0.12,
"from": 16550,
"to": 17000,
"shiftPercent": 2.719
},
{
"rate": 0.22,
"from": 63100,
"to": 64850,
"shiftPercent": 2.773
},
{
"rate": 0.24,
"from": 100500,
"to": 103350,
"shiftPercent": 2.836
},
{
"rate": 0.32,
"from": 191950,
"to": 197300,
"shiftPercent": 2.787
},
{
"rate": 0.35,
"from": 243700,
"to": 250500,
"shiftPercent": 2.79
},
{
"rate": 0.37,
"from": 609350,
"to": 626350,
"shiftPercent": 2.79
}
]
},
"standardDeduction": {
"single": {
"from": 14600,
"to": 15000,
"change": 400,
"changePercent": 2.74
},
"married_filing_jointly": {
"from": 29200,
"to": 30000,
"change": 800,
"changePercent": 2.74
},
"married_filing_separately": {
"from": 14600,
"to": 15000,
"change": 400,
"changePercent": 2.74
},
"head_of_household": {
"from": 21900,
"to": 22500,
"change": 600,
"changePercent": 2.74
}
}
}
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
year | number | 2025 | Tax year for the bracket data |
country | string | "US" | Country code for tax data |
type | string | "federal" | Which tax the brackets describe, such as federal |
brackets | object | {...} | Array of tax brackets with rates and income ranges |
single | array[7] | Rate bands for a single filer | |
rate | number | 0.1 | Marginal rate for the band |
min | number | 0 | Income at which the band starts |
max | number | 11924 | Income at which the band ends; null for the top band |
married_filing_jointly | array[7] | Rate bands for married filers filing jointly | |
rate | number | 0.1 | Marginal rate for the band |
min | number | 0 | Income at which the band starts |
max | number | 23849 | Income at which the band ends; null for the top band |
married_filing_separately | array[7] | Rate bands for married filers filing separately | |
rate | number | 0.1 | Marginal rate for the band |
min | number | 0 | Income at which the band starts |
max | number | 11924 | Income at which the band ends; null for the top band |
head_of_household | array[7] | Rate bands for a head of household filer | |
rate | number | 0.1 | Marginal rate for the band |
min | number | 0 | Income at which the band starts |
max | number | 16999 | Income at which the band ends; null for the top band |
standard_deduction | object | {...} | Standard deduction amounts by filing status |
single | number | 15000 | |
married_filing_jointly | number | 30000 | |
married_filing_separately | number | 15000 | |
head_of_household | number | 22500 | |
lastUpdated | string | "2026-02-07T06:02:41.898Z" | When the bracket table was last refreshed |
marriagePenaltyPremium | object | {...} | Where filing jointly stops being worth twice a single filer's thresholds; null when the schedule doubles all the way up |
appliesFromRatePremium | number | 0.37 | The rate band at which the doubling first breaks |
singleThresholdPremium | number | 626350 | Income at which a single filer enters that band |
jointThresholdPremium | number | 751600 | Income at which a couple filing jointly enters the same band |
jointShortfallPremium | number | 501100 | How far the joint threshold falls short of twice the single threshold |
effectiveRateCurvePremium | object | {...} | Effective and marginal rate at a fixed ladder of incomes, for each filing status, showing the shape of the schedule |
singlePremium | array[5] | ||
incomePremium | number | 25000 | |
taxableIncomePremium | number | 10000 | |
taxPremium | number | 1000 | |
effectiveRatePremium | number | 0.04 | |
marginalRatePremium | number | 0.1 | |
married_filing_jointlyPremium | array[5] | ||
incomePremium | number | 25000 | |
taxableIncomePremium | number | 0 | |
taxPremium | number | 0 | |
effectiveRatePremium | number | 0 | |
marginalRatePremium | number | 0.1 | |
married_filing_separatelyPremium | array[5] | ||
incomePremium | number | 25000 | |
taxableIncomePremium | number | 10000 | |
taxPremium | number | 1000 | |
effectiveRatePremium | number | 0.04 | |
marginalRatePremium | number | 0.1 | |
head_of_householdPremium | array[5] | ||
incomePremium | number | 25000 | |
taxableIncomePremium | number | 2500 | |
taxPremium | number | 250 | |
effectiveRatePremium | number | 0.01 | |
marginalRatePremium | number | 0.1 | |
changesPremium | object | {...} | How the table moved since the previous tax year; null when there is no prior year to compare against |
versusYearPremium | number | 2024 | The tax year being compared against |
indexingPercentPremium | number | 2.794 | Average shift across every indexed threshold, which is the inflation adjustment the tax authority actually applied |
bracketShiftsPremium | object | {...} | Each band's threshold before and after, per filing status, with the percentage it moved |
singlePremium | array[6] | ||
ratePremium | number | 0.12 | |
fromPremium | number | 11600 | |
toPremium | number | 11925 | |
shiftPercentPremium | number | 2.802 | |
married_filing_jointlyPremium | array[6] | ||
ratePremium | number | 0.12 | |
fromPremium | number | 23200 | |
toPremium | number | 23850 | |
shiftPercentPremium | number | 2.802 | |
married_filing_separatelyPremium | array[6] | ||
ratePremium | number | 0.12 | |
fromPremium | number | 11600 | |
toPremium | number | 11925 | |
shiftPercentPremium | number | 2.802 | |
head_of_householdPremium | array[6] | ||
ratePremium | number | 0.12 | |
fromPremium | number | 16550 | |
toPremium | number | 17000 | |
shiftPercentPremium | number | 2.719 |
Response headers
Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.
| Header | What it carries |
|---|---|
x-api-remaining-credits | Credits left in the current cycle |
x-api-credits-used | Credits spent in the current cycle |
x-api-max-credits | The allowance for the cycle |
x-api-version | Version of the endpoint that answered |
Errors
Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.
| Status | Meaning | What to do |
|---|---|---|
400 | Input was rejected | Read error; it names the parameter that has to change. |
401 | Key missing or invalid | Check the header name and the key value. |
403 | Key valid, but not permitted here | A key restriction or an IP allow-list — never a bad key. |
429 | Rate limited, or out of credits | Read error to tell them apart, then back off or top up. |
What a call costs — 2 credits per call
Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.
| Plan | Per month | Credits | Income Tax Brackets calls | Per 1,000 calls |
|---|---|---|---|---|
| Free | Free | 200 | 100 | Free |
| Starter | $29.99 | 200,000 | 100,000 | $0.30 |
| Pro | $99.99 | 1,000,000 | 500,000 | $0.20 |
| Mega | $299.99 | 4,000,000 | 2,000,000 | $0.15 |
Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.
Call it from cURL — GET /v1/incometax
No SDK to install — this is a plain HTTPS call to /v1/incometax with your key in the x-api-key header. Swap in a real key and it runs as-is.
curl "https://api.apiverve.com/v1/incometax" \
-H "x-api-key: YOUR_API_KEY"Resources
GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from Node.js — GET /v1/incometax
Install the Node.js SDK, then call the Income Tax Brackets API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.
npm install @apiverve/incometaxconst res = await fetch("https://api.apiverve.com/v1/incometax", {
headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);Resources
npm@apiverve/incometaxThe published Node.js client, versioned and signed.GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from Python — GET /v1/incometax
No SDK to install — this is a plain HTTPS call to /v1/incometax with your key in the x-api-key header. Swap in a real key and it runs as-is.
import requests
res = requests.get(
"https://api.apiverve.com/v1/incometax",
headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])Resources
GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from C# / .NET — GET /v1/incometax
Install the C# / .NET SDK, then call the Income Tax Brackets API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.
dotnet add package APIVerve.API.IncomeTaxBracketsusing var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");
var json = await client.GetStringAsync("https://api.apiverve.com/v1/incometax");
Console.WriteLine(json);Resources
NuGetAPIVerve.API.IncomeTaxBracketsThe published C# / .NET client, versioned and signed.GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from Go — GET /v1/incometax
No SDK to install — this is a plain HTTPS call to /v1/incometax with your key in the x-api-key header. Swap in a real key and it runs as-is.
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/incometax", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))Resources
GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from PHP — GET /v1/incometax
No SDK to install — this is a plain HTTPS call to /v1/incometax with your key in the x-api-key header. Swap in a real key and it runs as-is.
$ch = curl_init("https://api.apiverve.com/v1/incometax");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);
$response = curl_exec($ch);
echo $response;Resources
GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Call it from Ruby — GET /v1/incometax
No SDK to install — this is a plain HTTPS call to /v1/incometax with your key in the x-api-key header. Swap in a real key and it runs as-is.
require "net/http"
uri = URI("https://api.apiverve.com/v1/incometax")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"
res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.bodyResources
GitHubapiverve/incometax-apiSource, issues and the examples this page is built from.ReferenceIncome Tax Brackets API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.
Also published for
Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.
Zero-code embed — one snippet, no backend
Drop an interactive Income Tax Brackets form onto any page. The widget calls the API for you, so no key ever appears in your markup and there is nothing to deploy.
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Changelog — Income Tax Brackets API
Every change to this endpoint, newest first. Breaking changes ship as a new version and the previous one keeps serving — response fields are added, never removed or retyped in place, so an integration written against v1 keeps working.
Nothing recorded yet
Entries are picked up from dated catalog snapshots, so the first one appears after the next snapshot that moves something. A period where nothing changed produces no entry — silence is a valid changelog for the Income Tax Brackets API.
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