TickfootFor bookkeepers and small firms

Tie out W-2 Code TT

Code TT is the W-2 box 12 amount for qualified overtime. Rebuild it from a timesheet and see why it differs from the payroll register.

Drop a CSV here or choose a file Columns: employee, date, hours, rate, earning code

· · File format

One line per employee: name, then the year's overtime earnings from the payroll register. Optional.

Runs in your browser. Payroll data is never uploaded.

A sample worksheet

Built from the sample timesheet: six employees, six workweeks. A tickmark means the register is fully explained.

EmployeeRegister OTCode TTDifferenceReason
Dana Okafor Ties
Register OT$330.00
Code TTTT110.00
Difference$220.00
Half-time only
Luis Ferreira Ties
Register OT$400.00
Code TTTT100.00
Difference$300.00
Half-time onlyDouble time
Priya Raman Ties
Register OT$225.00
Code TTTT25.00
Difference$200.00
Half-time onlyHoliday or PTO hours
Marcus Bell Ties
Register OT$1,350.00
Code TTTT90.00
Difference$1,260.00
Half-time onlyDaily overtime
Jo Lindqvist Stopped: no number

Bonus or commission found. A non-discretionary bonus or commission raises the regular rate for the weeks it covers, so the half-time premium is no longer half the hourly rate.

Sam Whitaker $31.50 unexplained
Register OT$189.00
Code TTTT52.50
Difference$136.50
Half-time onlyUnexplained
Total, 5 employees
Register OT$2,494.00
Code TT$377.50
Difference$2,116.50
Not in the total: 1 stopped.

Why the two numbers differ

Double timeOnly the half-time part of a 2x premium counts. Holiday or PTO hoursPaid hours that were not worked do not count toward 40. State daily overtimeOvertime after 8 or 12 hours in a day is state law, not FLSA. Split workweeksPay periods cut through workweeks; Code TT follows the workweek and the payday.

All six reasons, with the rule for each

What it covers

Hourly staff on one rate per workweek. If the file shows a bonus, commission, tips, a salary, a shift differential or two rates in one week, the tool stops for that employee, explains why and gives no number. It does not know who is exempt from overtime; leave exempt staff out of the file.

Pricing

$39

Practice. One-time, up to 10 EINs (employer ID numbers). All employees, totals, print worksheet and CSV.

Free during launch

$129

Season. Unlimited EINs through the W-2 season.

Free during launch

Free without paying: one employee, on screen.

Questions

What is Code TT?

Code TT is the Form W-2 box 12 code for qualified overtime: the part of overtime pay above the regular rate that the Fair Labor Standards Act (FLSA) requires for hours worked over 40 in a workweek. It is required on Forms W-2 from tax year 2026.

Why does it differ from the overtime on the payroll register?

The register shows all overtime pay. Code TT is only the half-time premium on hours worked over 40 in a workweek. Double time, holiday or PTO hours, state daily overtime and pay periods that split a workweek all create differences.

Is my payroll data uploaded?

No. The file is read and computed in your browser. Nothing from the timesheet or register is sent anywhere. The page sends only anonymous usage counts.

What does the tool refuse to compute?

Employees with bonuses or commissions, tips, a salary, shift differentials or two hourly rates in one workweek. Their regular rate needs facts a timesheet does not hold, so the tool stops and says why instead of giving a number.

What does it cost?

One employee on screen is free. All employees with totals and the print worksheet is $39 one-time, per practice, up to 10 EINs, or $129 for unlimited EINs for the season. During launch the full result is free.

Is this tax advice?

No. It is a calculation aid with every rule cited. Confirm the figures before filing Form W-2.