Pascaline

Premium Tax Suite

R&D Tax Credit (§41) beta

The §41 research credit under the ASC and regular methods, the §280C reduced election, and the payroll-tax offset for pre-revenue startups.

Get an API key Docs

Endpoints

  • POST /tax-credit/calculate-rd-credit

MCP tools

  • calculate_rd_tax_credit

Example

curl -X POST https://pascaline.io/tax-credit/calculate-rd-credit \
  -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.

R&D tax credit calculator API · section 41 research credit API · payroll tax offset API