Pass-through tax rules
Cited, tax-year-dated rules for state PTET, the federal SALT cap, and bonus-depreciation conformity.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"pass-through-tax-rules": {
"url": "https://passthroughtax.com/api/mcp"
}
}
}Remote endpoints
https://passthroughtax.com/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (4)
🟢ptet_rules(state, tax_year)
Elective pass-through entity tax for one state and tax year: eligibility, who elects, deadline, rate, owner credit or exclusion, estimates, and sunset. Returns not_covered when this server has no file. Informational, not tax advice.
Input Schema
{
"type": "object",
"properties": {
"state": {
"type": "string",
"description": "Postal code or full state name. The District of Columbia is DC. New York City is NYC."
},
"tax_year": {
"description": "Tax year, such as 2026. Files are tax-year specific.",
"type": [
"number",
"string"
]
}
},
"required": [
"state",
"tax_year"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢salt_cap(tax_year, filing_status, magi)
Compute the federal SALT deduction cap under 26 USC 164(b)(6) and (b)(7) for a tax year, filing status, and modified adjusted gross income. Returns the cap and the steps, not the deduction. Years before 2018 are not_covered. MAGI is used to compute and is not written to the usage log.
Input Schema
{
"type": "object",
"properties": {
"tax_year": {
"description": "Tax year. 2018 through 2024 use the prior flat cap. 2025 and later use section 164(b)(7).",
"type": [
"number",
"string"
]
},
"filing_status": {
"type": "string",
"description": "single, married_filing_jointly, married_filing_separately, head_of_household, or qualifying_surviving_spouse. Aliases: mfj, mfs, hoh, qss."
},
"magi": {
"description": "Modified adjusted gross income: AGI plus IRC 911, 931, and 933 exclusions. Integer or decimal string, at most 8 decimal places.",
"type": [
"number",
"string"
]
}
},
"required": [
"tax_year",
"filing_status",
"magi"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢bonus_conformity(state, tax_year)
Whether a state conforms to IRC 168(k) bonus depreciation and IRC 179 for a tax year, its IRC conformity date, and the add-back or subtraction in plain terms. Unverified fields are null. Unknown states and years are not_covered.
Input Schema
{
"type": "object",
"properties": {
"state": {
"type": "string",
"description": "Postal code or full state name. The District of Columbia is DC. New York City is NYC."
},
"tax_year": {
"description": "Tax year, such as 2026. Files are tax-year specific.",
"type": [
"number",
"string"
]
}
},
"required": [
"state",
"tax_year"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢coverage
List jurisdictions and tax years in this dataset. elective_ptet_2026 counts only 2026 files with an elective PTET. no_elective_ptet_2026 and not_effective_2026 are separate and are not PTET states for 2026.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Community
Evidence