Shift differential & holiday pay calculator

Multiply qualifying hours by the premium. Flat: (base + $/hr) × hours. Percent: base × (1 + %) × hours. Add base-only hours at the standard rate, then include overtime using the regular rate if applicable.

It adds $1.50 per qualifying hour to base pay. At $18/hr base, the effective rate is $19.50/hr on premium shifts.

Many US employers use $0.50–$2/hr flat or 5%–15% of base pay, with higher premiums in healthcare and 24/7 manufacturing. Market and contract terms vary — this is not a legal minimum.

Usually yes — most policies pay a flat or percentage premium for each qualifying hour worked, not a one-time shift stipend unless your handbook says otherwise.

Premium dollars = base rate × (percent ÷ 100) × hours. A 10% shift differential on $20/hr adds $2/hr → $22/hr effective rate.

Compute total straight-time pay for the week, divide by total hours to get the regular rate, then add OT premium = regular rate × 0.5 × OT hours (time-and-a-half). This calculator uses that blended method by default.

Often yes for nondiscretionary premiums — they can increase the FLSA regular rate. Discretionary bonuses may be treated differently; confirm with payroll counsel.

Either — US private employers set policy. Many use 1.5× for holiday hours worked; union deals may use 2×. Model 50% or 100% premiums with the Holiday preset or a custom percent row.

If policy pays 1.5× for holiday hours worked: $20 × 1.5 = $30/hr for those hours (before overtime interactions). Paid day-off grants without working are handbook-specific and not modeled here.

No. This tool models US-style hourly premiums when staff work holidays. UK statutory leave and reference-period pay use different rules — see GOV.UK guidance, not this calculator.

Some employers stack; others pay the higher of two premiums. Add separate rows for each policy line, or one combined row if payroll treats them as a single blended premium.

Federal law does not require night premiums for most private employers. They are usually voluntary incentives — unless a state law, contract, or CBA requires them.

Shift differential rewards when you work. Overtime rewards how many hours exceed the legal threshold. You can receive both in the same week.

Sometimes. Salaried workers can receive shift premiums when company policy allows — classification (exempt vs non-exempt) drives overtime rules, not the word “salary.” This calculator models hourly-style premiums; salaried stipends need handbook-specific treatment.

Yes — use CSV export. Download the breakdown as CSV and open it in Excel or Google Sheets for payroll review. This page is a live calculator (no spreadsheet download required); CSV replaces a static Excel template for most teams.

Your employer adds 15% of base pay on each qualifying hour. At $20/hr base, the effective rate is $23/hr (20 × 1.15). Use the Night preset or enter 15% on a premium row.

Policy-defined. Federal law does not set a universal start time. Handbooks often start night differential after 6 p.m. or 10 p.m., or on second/third shift codes. Model qualifying hours in the calculator — not clock windows.

Mostly employer choice. The FLSA does not require shift premiums for typical private employers, but nondiscretionary premiums affect overtime regular-rate math nationwide. Some states or cities have industry-specific rules — confirm with your state labor agency and contracts; this tool does not encode 50-state premium mandates.

Premiums still matter. Shift differential is usually paid on straight-time qualifying hours first. When you work overtime, nondiscretionary premiums typically increase the regular rate, so OT dollars are higher than base-only math — use blended OT in this calculator.

Yes — use CSV (Excel-compatible) or PDF export to save inputs and the pay breakdown for personal records or HR review. Results are estimates, not payroll instructions.