Code TT calculator

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Box 12, code TT — workweek audit trail

Add your payroll data

One row per employee per workweek. Several rows for the same employee and week are added together. Download the CSV template · What each column means

Weekly payroll CSV (required)

Bonus true-ups CSV (optional)

For quarterly or annual nondiscretionary bonuses that cover past workweeks. Bonus template

Tax year Round the regular rate to cents before applying half-time

Results for W-2s

Employees

Overtime paid (register)

Box 12, code TT total

Weeks to review

Employee	ID	Weeks with OT	OT paid	Weekly TT	Bonus true-up TT	Box 12, code TT	Review

Select an employee's name to see each workweek. Weeks paid in another year are left out ( found).

What the review notes mean

Box12TT reports only the overtime premium FLSA section 7 required and that you actually paid, as IRS guidance for 2026 W-2s describes. It is a calculation aid, not tax or legal advice. Review flagged weeks before you file.