Net pay
Take-home pay: gross wages minus FICA and the income-tax withholding taken on this check. It is what lands in the account, not the tax bill for the year.
Gross is the offer. Net is the deposit. They part at Social Security, Medicare, and withholding, and they part further if a state line is in play.
A budget spends net. A 50/30/20 split that runs on gross will print buckets the account cannot fund. A lender's debt-to-income ratio does the opposite on purpose and is written on gross.
Net is also not the effective tax rate or the marginal tax rate. Those describe the return. The paycheck calculator splits one check.