Pascaline

Estate Planning Suite

GRAT / CLAT / SLAT Trust Calculator beta

GRAT annuity and zero-out math, CLAT charitable deductions, and SLAT analysis using the §7520 rate and Rev Proc 2019-44 annuity factors.

Get an API key Docs

Endpoints

  • POST /estate/calculate-grat
  • POST /estate-planning/grat

MCP tools

  • calculate_grat

Example

curl -X POST https://pascaline.io/estate/calculate-grat \
  -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.

GRAT calculator API · Section 7520 rate calculator · zero-out GRAT calculation · CLAT deduction API