Payroll Education Basics (2026): How Pay Is Actually Calculated, Step by Step

Payroll in One Sentence

Payroll is four operations in a fixed order: count the hours, price the hours, subtract what the law and the employee authorised, then keep the evidence.

Almost every payroll error is an operation performed out of order — most often pricing overtime before the regular rate is properly built. This guide walks through each step in plain language, with the numbers a beginner needs and none of the jargon.

Step 1: Count the Hours Worked

The unit that matters is the workweek: a fixed, recurring 168-hour period the employer defines. It does not have to match the calendar week or the pay period, but it must be consistent.

Hours worked includes all time the employer permits or suffers to be worked:

• Pre-shift setup and post-shift cleanup
• Mandatory training and meetings
• Travel between worksites during the day
• Work through an unpaid meal break
• After-hours calls, texts, and emails

It excludes paid time off, holidays, and sick leave. That distinction matters enormously in step 3: PTO is paid, but it is not hours worked, so it does not count toward the 40-hour overtime threshold.

Step 2: Build the Regular Rate

This is the step beginners skip and auditors check first. The regular rate is not the base hourly wage. It is total straight-time compensation for the week divided by total hours worked.

Included in the regular rate:

• Base hourly wages
• Nondiscretionary bonuses (attendance, production, safety)
• Shift differentials and night or weekend premiums
• Commissions and piece-rate earnings

Excluded:

• Discretionary gifts
• Paid leave and reimbursements
• True benefit plan contributions

Worked example. 45 hours at $20, plus a $100 production bonus.

• Straight-time pay: 45 x $20 = $900, plus $100 bonus = $1,000
• Regular rate: $1,000 / 45 = $22.22
• Overtime premium: 5 hours x $22.22 x 0.5 = $55.55
• Gross: $1,000 + $55.55 = $1,055.55

Pay the overtime on the base $20 instead and you underpay by $5.55 that week. Repeat it for a year across a crew of twenty and it becomes a five-figure liability. Verify your own figure with the FLSA overtime calculator.

Step 3: Apply the Overtime Rules

Federal floor: 1.5 times the regular rate for hours worked over 40 in the workweek. No daily rule, no averaging across weeks.

State rules stack on top and the employee gets whichever is more generous:

| Rule type | Where it applies (examples) |

| --- | --- |

| Daily overtime after 8 hours | California, Alaska, Nevada, Colorado |

| Double time after 12 hours in a day | California, Colorado |

| Seventh consecutive day premium | California |

| Overtime after 40 hours only | Most other states |

Step 4: Gross to Net

Deductions come off in a specific order:

• . Pre-tax deductions — 401(k), health premiums, HSA, some commuter benefits
• . Federal income tax withholding — based on the W-4 and wage bracket
• . FICA — 6.2 percent Social Security up to the annual wage base, 1.45 percent Medicare with no cap, plus 0.9 percent additional Medicare above the high-earner threshold
• . State and local income tax — nine states have no wage income tax
• . Post-tax deductions — garnishments, union dues, Roth contributions

Two guardrails: no deduction may drop an employee below minimum wage for uniforms, tools, or cash shortages in most states, and overtime is not taxed at a special rate — it simply sits at the top of your income, so withholding on it looks higher.

Model a full paycheck with the paycheck calculator or isolate the tax on premium hours with the overtime tax calculator.

Step 5: Pay Stubs and Records

Most states require an itemised statement showing hours, rates, gross, each deduction, and net. Federal recordkeeping minimums:

• Payroll records: 3 years
• Time cards, schedules, and wage computation records: 2 years
• Records must show daily and weekly hours per employee

In a wage dispute, missing records do not create a neutral tie. Where the employer has no records, the employee's reasonable estimate can carry the day.

The Six Errors Beginners Make Most

• . Paying overtime on base pay instead of the blended regular rate
• . Averaging hours across two weeks of a biweekly pay period
• . Counting PTO and holiday hours toward the 40-hour threshold
• . Treating a salary as automatic exemption from overtime
• . Auto-deducting a meal break the employee actually worked
• . Rounding time in a way that consistently favours the employer

Every one of them is on the downloadable payroll run checklist.

Where to Go Next

If you are learning payroll from scratch, work in this order: workweek, hours worked, regular rate, overtime, taxes, records. Then read the beginner overtime guide and check one real paystub end to end. Nothing teaches payroll faster than auditing a stub you already understand the story behind.