Pascaline

Premium Tax Suite

PTET / SALT Cap Optimizer beta

Models the pass-through-entity tax workaround to the SALT cap across 36 states, including the OBBBA cap, the QBI interaction cost, and the New York addback.

Get an API key Docs

Endpoints

  • POST /ptet/calculate-benefit

MCP tools

  • calculate_ptet_benefit

Example

curl -X POST https://pascaline.io/ptet/calculate-benefit \
  -H 'content-type: application/json' \
  -H 'x-api-key: <keyId>.<secret>' \
  -d '{ ... }'

Responses include data_as_of, formula_version (2026.1), citations, and tier (beta). See the full reference and the verification process.

PTET calculator API · SALT cap workaround API · pass-through entity tax API