The sales-tax rate at a US ZIP+4, ZIP or street address in a Streamlined Sales T
The sales-tax rate at a US ZIP+4, ZIP or street address in a Streamlined Sales Tax state
Answeringour last check, 2026-10-21
1 of 1checks answered this week
916 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://data.spencermcw.com/v1/tax/sales-rate
| Category | Everything else |
|---|---|
| Provider host | data.spencermcw.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.005 | 916 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"date": "2026-10-19",
"zip": "98101-3143"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"maxLength": 120,
"minLength": 3,
"type": "string"
},
"date": {
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"zip": {
"pattern": "^\\d{5}(-?\\d{4})?$",
"type": "string"
}
},
"required": [
"zip"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"additionalProperties": false,
"properties": {
"agreement": {
"additionalProperties": false,
"properties": {
"agreeing": {
"maximum": 9007199254740991,
"minimum": -9007199254740991,
"type": "integer"
},
"finer_records": {
"maximum": 9007199254740991,
"minimum": -9007199254740991,
"type": "integer"
}
},
"required": [
"finer_records",
"agreeing"
],
"type": "object"
},
"alternate": {
"items": {
"additionalProperties": false,
"properties": {
"code": {
"type": "string"
},
"product": {
"type": "string"
},
"rate": {
"type": "string"
}
},
"required": [
"product",
"code",
"rate"
],
"type": "object"
},
"type": "array"
},
"combined": {
"additionalProperties": false,
"properties": {
"food_drug": {
"type": "object"
},
"general": {
"type": "object"
}
},
"required": [
"general",
"food_drug"
],
"type": "object"
},
"components": {
"items": {
"additionalProperties": false,
"properties": {
"code": {
"type": "string"
},
"effective_from": {
"type": "string"
},
"effective_to": {
"type": [
"string",
"null"
]
},
"food_drug": {
"type": "object"
},
"general": {
"type": "object"
},
"jurisdiction": {
"enum": [
"state",
"county",
"place",
"special"
],
"type": "string"
},
"type": {
"type": "string"
},
"type_name": {
"type": "string"
}
},
"required": [
"jurisdiction",
"code",
"type",
"type_name",
"general",
"food_drug",
"effective_from",
"effective_to"
],
"type": "object"
},
"type": "array"
},
"effective": {
"additionalProperties": false,
"properties": {
"from": {
"type": "string"
},
"to": {
"type": [
"string",
"null"
]
}
},
"required": [
"from",
"to"
],
"type": "object"
},
"jurisdiction_codes": {
"additionalProperties": false,
"properties": {
"composite_ser_code": {
"type": [
"string",
"null"
]
},
"county": {
"type": [
"string",
"null"
]
},
"place": {
"type": [
"string",
"null"