Profile
Filing status, state, SE start date, dependents, optional spouse.
Edit at /profile. The profile is a single row; the spouse block is a separate dated-period
record so income/withholding spans can be represented across mid-year changes.
Self-employment start date
The se_start_date is load-bearing for the tax estimate. Rows dated before it are kept in your
data but excluded from the year's totals — useful when you want a clean record of pre-SE income
without it polluting your quarterly estimates. Mid-month dates are honored (home-office and
mileage prorate by day).
CSV
CSV record_type = profile (singleton; id is the literal string profile). See the
CSV format reference for the full column list.