Calculate the maximum wage garnishment for consumer debt, child support, or student loans based on take-home pay and pay frequency.
Wage Garnishment Formula
This calculator has federal-ceiling modes for ordinary debts, support orders and single-agency federal student-loan administrative wage garnishment (AWG). Separate percentage-arithmetic modes use the formulas below to solve for an amount, rate or pay base; those arithmetic results do not determine a legal withholding limit.
| Variable | Meaning | Typical Unit |
|---|---|---|
| WG | Wage garnishment amount withheld from the paycheck | Dollars ($) |
| G | Garnishment rate applied to pay | Percent (%) |
| P | Pay base for one period in percentage-arithmetic modes | Dollars ($) |
How to Calculate Wage Garnishment
- For percentage arithmetic, identify the applicable pay base for a single period.
- Enter the garnishment rate as a percentage.
- Multiply that pay base by the entered rate.
- Divide by 100 to convert the percentage into a dollar withholding amount.
These three formulas describe percentage arithmetic only. For ordinary debts, the federal aggregate ceiling is max(0, min(25% × disposable earnings, disposable earnings − protected threshold)). At the federal minimum wage of $7.25/hour, the thresholds are $217.50 weekly, $435.00 biweekly, $471.25 semimonthly and $942.50 monthly. Lower applicable state limits and the actual order can control.
Example
In percentage-arithmetic mode, if the pay base is $2,000 and the rate is 15%, the calculated amount is:
The estimated wage garnishment amount is $300.
Reverse Calculations
The calculator is also useful when you need to work backward from a known deduction.
- Find the rate: Use the withheld amount and pay base to solve for the percentage.
- Find the pay base: Use the withheld amount and rate to estimate the pay base that produced the deduction.
For example, if the garnishment amount is $180 and the rate is 12%, then the implied pay base is:
Gross Pay vs. Disposable Earnings
The ordinary-debt and support modes use disposable earnings: earnings after deductions required by law, generally before voluntary insurance, retirement or union deductions and before existing garnishments. Student-loan AWG disposable pay also deducts health-insurance premiums. Neither base is simply take-home pay.
| Term | Meaning | Why It Matters |
|---|---|---|
| Gross Pay | Total earnings before deductions | Use only if gross pay is the intended base for percentage arithmetic. |
| Disposable Earnings | Earnings remaining after legally required deductions | This is the base for the ordinary-debt and support federal-ceiling modes. |
| Net Pay | Amount paid to the employee after all deductions | Net pay can differ from the calculator result because other deductions may still apply. |
Support ceilings are 50% when supporting another spouse or dependent child outside the order, or 60% otherwise; qualifying support owed more than 12 weeks earlier adds five percentage points. Mixed current/older-arrears orders may need allocation. The ordinary-debt protected-pay floor does not apply to support. Student-loan mode estimates min(15% × AWG disposable pay, pay above the period threshold), floored at zero, for one agency without competing garnishments or written consent. Multiple-order and hardship rules can reduce or alter withholding. ED announced an involuntary-collection delay January 16, 2026; no restart notice was found when checked October 12, 2026. This does not establish an individual’s collection status.
Common Types of Wage Garnishment
- Consumer debt judgments
- Child support or family support orders
- Tax-related levies
- Student loan collections
- Court fines or other legal obligations
- Bankruptcy-related withholding orders
Each type can follow different rules, priorities, and limits, so the percentage used in the calculator should come directly from the notice, court order, or payroll instruction.
Tips for Using the Calculator Accurately
- Use the pay amount for one pay period only; do not mix weekly, biweekly, and monthly figures.
- Enter the garnishment rate as a percent, not a decimal.
- Run the calculation again whenever overtime, bonuses, commissions, or unpaid time change the pay amount.
- If the withholding amount from payroll does not match the estimate, check whether the order is based on disposable earnings instead of gross pay.
- For multiple garnishments, do not assume the percentages simply add together; order priority and legal caps may affect the final deduction.
Frequently Asked Questions
- Does this calculator estimate a dollar deduction or a full payroll result?
- It estimates the garnishment amount only. It does not calculate taxes, benefits, or full take-home pay.
- Can I use this calculator for any pay schedule?
- The federal floor modes support weekly, biweekly, semimonthly and monthly pay. Percentage arithmetic can use any consistently stated pay period.
- What if I only know the deduction amount?
- The separate arithmetic modes can solve for either the rate or the pay base from the other required value; they do not infer a lawful garnishment rate.
- Why might actual payroll withholding be different?
- Actual withholding may depend on disposable earnings, legal limits, state-specific rules, employer processing requirements, or the priority of multiple orders.
