870.10—Maximum part of aggregate disposable earnings subject to garnishment under section 303(a).

the maximum part of the aggregate disposable earnings of an individual for any workweek which is subjected to garnishment may not exceed
(1) 25 per centum of his disposable earnings for that week, or
(2) the amount by which his disposable earnings for that week exceed thirty times the Federal minimum hourly wage prescribed by section 6(a)(1) of the Fair Labor Standards Act of 1938, in effect at the time the earnings are payable.
whichever is less. In the case of earnings for any pay period other than a week, the Secretary of Labor shall by regulation prescribe a multiple of the Federal minimum hourly wage equivalent in effect to that set forth in paragraph (2).
(2) The following formula should be used to calculate the dollar amount of disposable earnings which would not be subject to garnishment: The number of workweeks, or fractions thereof, should be multiplied times the applicable Federal minimum wage and that amount should be multiplied by 30. For example, for the period April 1, 1990 through March 31, 1991 when the Federal minimum wage was $3.80 per hour, the formula should be calculated based on a minimum wage of $3.80 ($3.80 multiplied by 30 equals $114; $114 multiplied by the number of workweeks (or fractions thereof) equals the amount that cannot be garnished). As of April 1, 1991, the $4.25 Federal minimum wage replaces $3.80 in the formula (and the amount which cannot be garnished would then be $127.50 multiplied by the number of workweeks (or fractions thereof)). For purposes of this formula, a calendar month is considered to consist of 4 1/3 workweeks. Thus, during the period April 1, 1990 through March 31, 1991 when the Federal minimum hourly wage was $3.80 an hour, the amount of disposable earnings for a 2-week period is $228.00 (2×30×$3.80); for a monthly period, $494.00 (4 1/3 ×30×$3.80). Effective April 1, 1991, such amounts increased as follows: for a two-week period, $255.00 (2×30×$4.25); for a monthly period, $552.50 (4 1/3 ×30×$4.25). The amount of disposable earnings for any other pay period longer than 1 week shall be computed in a manner consistent with section 303(a) of the act and with this paragraph.
Date Minimum amount Weekly amount Biweekly amount Semi-monthly amount Monthly rate
Jan. 1, 1981 $3.35 $100.50 $201.00 $217.75 $435.50
Apr. 1, 1990 3.80 114.00 228.00 247.00 494.00
Apr. 1, 1991 4.25 127.50 255.00 276.25 552.50
Date Minimum amount Weekly amount Biweekly amount Semi-monthly amount Monthly rate
Jan. 1, 1981 $3.35 $134.00 $268.00 $290.33 $580.67
Apr. 1, 1990 3.80 152.00 304.00 329.33 658.67
Apr. 1, 1991 4.25 170.00 340.00 368.33 736.67
For example, in April of 1990, if an individual's disposable earnings for a biweekly pay period are $274.00, the difference between $228.00 and $274.00 (i.e., $46.00) may be garnished.

Code of Federal Regulations

(Sec. 2, Pub. L. 93-259, 84 Stat 55)
[35 FR 8226, May 26, 1970, as amended at 40 FR 52610, Nov. 11, 1975; 43 FR 28471, June 30, 1978; 43 FR 30276, July 14, 1978; 44 FR 30685, May 29, 1979; 56 FR 32254, July 15, 1991; 56 FR 40660, Aug. 15, 1991]