Comparing Two Paychecks & Pay Schedules
Whether you are evaluating a new job offer, comparing weekly vs. biweekly pay schedules, analyzing a pay raise, or balancing two simultaneous jobs, a simple net paycheck estimate isn't always enough.
Our Dual Payroll Comparison Mode allows you to place two paychecks side-by-side to understand exactly how changes in gross pay, filing status, pay frequency, and pre-tax deductions affect your actual take-home income.
💡 "What Changed This Paycheck?" Breakdown
When comparing two paychecks, our calculator highlights the exact variance:
- Paycheck Net Delta: The immediate difference per check.
- Monthly & Annual Net Delta: The long-term impact on your bank account.
- Tax & Deduction Shifts: How federal taxes, FICA (6.2% Social Security + 1.45% Medicare), and 401(k) pre-tax contributions change between schedules.
Understanding Your Paycheck
Your paycheck shows gross pay (what you earned) and net pay (what you take home). The difference is taxes and deductions withheld by your employer.
Gross Pay vs. Net Pay
- Gross Pay: Your total earnings before any deductions. This is your hourly rate × hours worked, or your salary divided by pay periods.
- Net Pay (Take-Home): What's left after federal taxes, FICA, state taxes, and other deductions are subtracted.
Example: If you earn $1,000 gross per biweekly paycheck, you might take home around $750-$800 after taxes and deductions (depending on filing status, state, and benefits).
Federal Income Tax Withholding
Your employer withholds federal income tax based on:
- Your W-4 form: Filing status, dependents, and allowances
- Your income level: Higher income = higher tax bracket
- IRS withholding tables: Updated annually
2024 Federal Tax Brackets (Single Filers)
| Taxable Income | Tax Rate |
|---|---|
| $0 – $11,000 | 10% |
| $11,001 – $44,725 | 12% |
| $44,726 – $95,375 | 22% |
| $95,376 – $182,100 | 24% |
| $182,101 – $231,250 | 32% |
| $231,251 – $578,125 | 35% |
| $578,126+ | 37% |
Note: Tax brackets are progressive — you only pay the higher rate on income above each threshold, not your entire income.
FICA Taxes (Social Security & Medicare)
FICA (Federal Insurance Contributions Act) taxes fund Social Security and Medicare. These are mandatory for nearly all employees:
- Social Security Tax: 6.2% (up to $168,600 in 2024)
- Medicare Tax: 1.45% (no income limit)
- Additional Medicare Tax: 0.9% on income over $200,000 (single) or $250,000 (married)
Example: On $1,000 gross pay:
Social Security = $1,000 × 0.062 = $62
Medicare = $1,000 × 0.0145 = $14.50
Total FICA = $76.50
Pre-Tax Deductions
These reduce your taxable income, saving you money:
- 401(k) / 403(b) contributions: Retirement savings (up to $23,000 in 2024)
- Health insurance premiums: Employer-sponsored plans
- HSA / FSA contributions: Tax-advantaged healthcare accounts
Pay Periods Per Year
| Pay Period | Frequency | Paychecks/Year |
|---|---|---|
| Weekly | Every week | 52 |
| Biweekly | Every 2 weeks | 26 |
| Semi-monthly | Twice a month (e.g., 1st and 15th) | 24 |
| Monthly | Once a month | 12 |
Frequently Asked Questions
How do I compare two different job offers or pay schedules?
Toggle to "Compare Two Payrolls" at the top of the calculator. Enter the gross pay and deductions for each offer to view side-by-side net pay figures and an explicit variance analysis.
Can I calculate take-home pay if I hold two jobs at the same time?
Yes! The dual-payroll mode calculates individual net pay for Job #1 and Job #2, then provides a combined total monthly and annual net income figure.
Why is my take-home pay less than I expected?
Common reasons include FICA taxes (7.65%), state income tax, 401(k) contributions, or health insurance premiums withheld prior to net payout.
Related Calculators
- Salary to Hourly Calculator — convert annual salary to hourly rate
- Hourly to Salary Calculator — estimate annual earnings from hourly wage
- Overtime Calculator — calculate time-and-a-half pay
- Contractor vs Employee Calculator — compare W2 vs 1099 take-home pay