API v0 was released in February 2023 as a direct clone of the original calculator logic on our website. It is stable and will not receive major changes.
August 22, 2023: added
married_filing_separately as a valid value of
tax_filing in requests, and of
filing_status in responses.
If you only use
/api/v0/calculator, you are unaffected; you won't see the new value in responses unless you pass it in requests.
If you use
/api/v0/incentives, you'll see two new variations of the EV tax credits containing the new value.
The current IRA incentives treat married-filing-separately filers the same as single filers. However, the tax brackets are slightly different, so the new value will result in more accurate calculations of tax savings.
For changes to API content related to incentives, see the existing website changelog and related FAQs on the Rewiring America website.