Maryland Family Law Section 12-204
§ 12-204.
  (a)   (1)   The basic child support obligation shall be determined in accordance with the schedule of basic child support obligations in subsection (e) of this section. The basic child support obligation shall be divided between the parents in proportion to their adjusted actual incomes.
    (2)   (i)   If one or both parents have made a request for alimony or maintenance in the proceeding in which a child support award is sought, the court shall decide the issue and amount of alimony or maintenance before determining the child support obligation under these guidelines.
      (ii)   If the court awards alimony or maintenance, the amount of alimony or maintenance awarded shall be considered actual income for the recipient of the alimony or maintenance and shall be subtracted from the income of the payor of the alimony or maintenance under § 12-201(c)(2) of this subtitle before the court determines the amount of a child support award.
  (b)   (1)   Except as provided in paragraph (2) of this subsection, if a parent is voluntarily impoverished, child support may be calculated based on a determination of potential income.
    (2)   A determination of potential income may not be made for a parent who:
      (i)   is unable to work because of a physical or mental disability; or
      (ii)   is caring for a child under the age of 2 years for whom the parents are jointly and severally responsible.
  (c)   If a combined adjusted actual income amount falls between amounts shown in the schedule, the basic child support amount shall be extrapolated to the next higher amount.
  (d)   If the combined adjusted actual income exceeds the highest level specified in the schedule in subsection (e) of this section, the court may use its discretion in setting the amount of child support.
  (e)   Schedule of basic child support obligations:
Combined
Adjusted                         6 or
Actual     1     2     3     4     5     More
Income     Child     Children     Children     Children     Children     Children
0-850     $20 - $150 Per Month, Based
      On Resources And Living
      Expenses Of Obligor And Number
      Of Children Due Support
900     184     273     276     279     282     285
950     191     296     304     307     311     314
1000     198     307     332     336     340     343
1050     205     318     360     364     368     372
1100     212     329     389     393     397     401
1150     219     339     416     421     425     430
1200     226     350     438     449     454     458
1250     233     360     451     477     482     487
1300     239     371     465     504     510     515
1350     246     382     478     532     538     544
1400     253     392     491     554     566     572
1450     260     403     504     569     594     601
1500     267     413     517     584     623     629
1550     274     424     531     599     651     658
1600     282     436     546     616     672     691
1650     288     447     559     631     688     725
1700     295     457     572     645     704     753
1750     302     467     585     660     720     770
1800     308     477     598     674     735     787
1850     315     488     611     689     751     804
1900     321     498     624     703     767     821
1950     327     506     634     715     780     835
2000     332     515     645     727     793     848
2050     338     523     655     739     806     862
2100     343     531     666     751     819     876
2150     349     540     677     763     832     890
2200     354     548     687     774     845     904
2250     359     557     698     786     858     918
2300     365     565     708     798     871     931
2350     370     573     719     810     884     945
2400     376     582     729     822     897     959
2450     381     590     740     833     909     973
2500     386     598     750     845     922     987
2550     392     607     761     857     935     1000
2600     397     615     771     869     948     1014
2650     403     624     782     881     961     1028
2700     408     632     793     893     974     1042
2750     413     640     803     904     987     1056
2800     419     649     814     916     1000     1070
2850     424     657     824     928     1013     1083
2900     429     666     835     940     1026     1097
2950     435     675     846     953     1039     1112
3000     441     684     857     965     1053     1126
3050     446     693     868     978     1067     1141
3100     452     702     879     990     1080     1156
3150     458     710     890     1003     1094     1170
3200     463     719     901     1015     1108     1185
3250     469     728     912     1028     1121     1199
3300     475     737     923     1040     1135     1214
3350     480     746     934     1053     1148     1228
3400     486     755     945     1065     1162     1243
3450     491     764     957     1078     1176     1258
3500     497     773     968     1090     1189     1272
3550     503     782     979     1103     1203     1287
3600     508     790     990     1115     1216     1301
3650     514     799     1001     1128     1230     1316
3700     520     808     1012     1140     1244     1330
3750     525     817     1023     1152     1257     1345
3800     532     827     1035     1166     1273     1361
3850     538     837     1048     1181     1288     1378
3900     544     847     1060     1195     1303     1394
3950     551     857     1073     1209     1319     1411
4000     557     867     1085     1223     1334     1427
4050     563     877     1097     1236     1349     1442
4100     569     886     1109     1249     1363     1458
4150     575     895     1120     1262     1377     1473
4200     581     905     1132     1275     1391     1488
4250     587     914     1143     1288     1405     1503
4300     593     923     1155     1301     1420     1518
4350     598     932     1166     1314     1434     1534
4400     604     942     1178     1327     1448     1549
4450     610     951     1189     1340     1462     1564
4500     616     960     1201     1353     1477     1579
4550     622     970     1212     1366     1491     1594
4600     628     979     1224     1379     1505     1610
4650     634     987     1234     1391     1518     1624
4700     639     995     1244     1403     1530     1637
4750     644     1003     1254     1414     1543     1650
4800     649     1011     1264     1425     1555     1663
4850     655     1019     1274     1437     1567     1676
4900     660     1027     1284     1448     1580     1689
4950     665     1035     1294     1459     1592     1703
5000     670     1043     1304     1470     1604     1716
5050     676     1051     1314     1482     1617     1729
5100     681     1059     1324     1493     1629     1742
5150     686     1067     1334     1504     1641     1755
5200     691     1075     1344     1515     1654     1768
5250     696     1083     1354     1527     1666     1781
5300     702     1091     1364     1538     1678     1794
5350     707     1099     1374     1549     1691     1807
5400     712     1107     1384     1561     1703     1821
5450     717     1115     1394     1572     1715     1834
5500     722     1123     1404     1583     1728     1847
5550     728     1131     1414     1594     1740     1860
5600     733     1139     1424     1606     1752     1873
5650     738     1147     1434     1617     1765     1886
5700     743     1155     1444     1628     1777     1899
5750     748     1163     1454     1639     1789     1912
5800     754     1171     1464     1651     1801     1926
5850     759     1179     1474     1662     1814     1939
5900     764     1187     1484     1673     1826     1952
5950     769     1195     1494     1685     1838     1965
6000     774     1203     1504     1696     1851     1978
6050     780     1211     1513     1707     1863     1991
6100     785     1219     1523     1718     1875     2004
6150     790     1227     1533     1730     1888     2017
6200     795     1235     1543     1741     1900     2030
6250     800     1243     1553     1752     1912     2044
6300     806     1251     1563     1763     1925     2057
6350     811     1259     1573     1775     1937     2070
6400     815     1266     1582     1785     1947     2081
6450     819     1271     1589     1793     1956     2091
6500     823     1277     1597     1801     1965     2100
6550     827     1283     1604     1809     1974     2110
6600     831     1289     1611     1817     1983     2119
6650     834     1294     1618     1826     1992     2129
6700     838     1300     1626     1834     2001     2138
6750     842     1306     1633     1842     2010     2148
6800     846     1311     1640     1850     2019     2157
6850     850     1317     1647     1858     2028     2167
6900     854     1323     1654     1866     2037     2176
6950     857     1329     1662     1874     2045     2186
7000     861     1334     1669     1882     2054     2195
7050     865     1340     1676     1891     2063     2205
7100     869     1346     1683     1899     2072     2214
7150     873     1351     1691     1907     2081     2224
7200     876     1357     1698     1915     2090     2233
7250     880     1363     1705     1923     2099     2243
7300     884     1369     1712     1931     2108     2253
7350     888     1374     1720     1939     2117     2262
7400     892     1380     1727     1947     2126     2272
7450     895     1386     1734     1956     2135     2281
7500     899     1391     1741     1964     2144     2291
7550     903     1397     1748     1972     2153     2300
7600     906     1402     1755     1979     2161     2309
7650     909     1407     1761     1986     2168     2317
7700     912     1412     1768     1993     2175     2325
7750     915     1417     1774     1999     2182     2333
7800     918     1422     1780     2006     2190     2340
7850     921     1427     1786     2012     2197     2348
7900     923     1431     1792     2019     2204     2356
7950     926     1436     1798     2026     2211     2364
8000     929     1441     1804     2032     2219     2372
8050     932     1446     1810     2039     2226     2380
8100     935     1451     1817     2045     2233     2388
8150     938     1456     1823     2052     2240     2396
8200     941     1461     1829     2059     2248     2404
8250     944     1465     1835     2065     2255     2412
8300     947     1470     1841     2072     2262     2420
8350     949     1475     1847     2078     2270     2428
8400     952     1480     1853     2085     2277     2436
8450     955     1485     1860     2092     2284     2444
8500     958     1490     1866     2098     2291     2452
8550     961     1494     1872     2105     2299     2460
8600     964     1499     1878     2111     2306     2468
8650     967     1504     1884     2118     2313     2476
8700     970     1509     1890     2125     2320     2484
8750     973     1514     1896     2131     2328     2492
8800     975     1518     1901     2137     2334     2498
8850     978     1521     1906     2142     2340     2504
8900     980     1525     1910     2147     2345     2510
8950     982     1528     1915     2152     2351     2516
9000     989     1539     1928     2168     2367     2534
9050     992     1543     1933     2173     2373     2540
9100     994     1547     1938     2179     2379     2546
9150     997     1551     1943     2184     2385     2552
9200     999     1554     1948     2190     2391     2559
9250     1002     1558     1953     2195     2397     2565
9300     1004     1562     1958     2201     2403     2571
9350     1007     1566     1963     2206     2409     2578
9400     1009     1570     1967     2212     2415     2584
9450     1012     1574     1972     2217     2421     2590
9500     1014     1577     1977     2223     2427     2596
9550     1017     1581     1982     2228     2433     2603
9600     1020     1585     1987     2234     2439     2609
9650     1022     1589     1992     2239     2445     2615
9700     1025     1593     1997     2245     2451     2622
9750     1027     1597     2001     2250     2457     2628
9800     1030     1601     2006     2256     2463     2634
9850     1032     1604     2011     2261     2469     2640
9900     1035     1608     2016     2267     2475     2647
9950     1037     1612     2021     2272     2481     2653
10000     1040     1616     2026     2278     2487     2659
  (f)   The adjusted basic child support obligation shall be determined by multiplying the basic child support obligation by one and one-half.
  (g)   (1)   Subject to paragraphs (2) and (3) of this subsection, actual child care expenses incurred on behalf of a child due to employment or job search of either parent shall be added to the basic obligation and shall be divided between the parents in proportion to their adjusted actual incomes.
    (2)   Child care expenses shall be:
      (i)   determined by actual family experience, unless the court determines that the actual family experience is not in the best interest of the child; or
      (ii)   if there is no actual family experience or if the court determines that actual family experience is not in the best interest of the child:
        1.   the level required to provide quality care from a licensed source; or
        2.   if the custodial parent chooses quality child care with an actual cost of an amount less than the level required to provide quality care from a licensed source, the actual cost of the child care expense.
    (3)   Additional child care expenses may be considered if a child has special needs.
  (h)   Any extraordinary medical expenses incurred on behalf of a child shall be added to the basic child support obligation and shall be divided between the parents in proportion to their adjusted actual incomes.
  (i)   By agreement of the parties or by order of court, the following expenses incurred on behalf of a child may be divided between the parents in proportion to their adjusted actual incomes:
    (1)   any expenses for attending a special or private elementary or secondary school to meet the particular educational needs of the child; or
    (2)   any expenses for transportation of the child between the homes of the parents.
  (j)   (1)   Except as provided in paragraph (2) of this subsection, when a disability dependency benefit, a retirement dependency benefit, or other third party dependency benefit is paid to or for a child of an obligor who is disabled, retired, or is receiving benefits from any source as a result of a compensable claim, the amount of the compensation shall be set off against the child support obligation calculated using the guidelines.
    (2)   (i)   If the amount paid to or for a child exceeds the current child support obligation calculated using the guidelines, the excess payment shall be credited to any existing child support arrearage that accrued after the effective date the benefits were awarded.
      (ii)   The excess payment may not be credited to any future child support obligation.
  (k)   (1)   Upon the expiration of a use and possession order or the expiration of the right to occupy the family home under a separation or property settlement agreement and upon motion of either party, the court shall review the child support award.
    (2)   If the allocation of financial responsibility for the family home was a factor in departing from the guidelines under subsection (a) of this section, the court may modify the child support, if appropriate in all the circumstances, upon the expiration of the use and possession order or the expiration of the right to occupy the family home under a separation or property settlement agreement.
  (l)   (1)   Except in cases of shared physical custody, each parent's child support obligation shall be determined by adding each parent's respective share of the basic child support obligation, work-related child care expenses, extraordinary medical expenses, and additional expenses under subsection (i) of this section.
    (2)   The custodial parent shall be presumed to spend that parent's total child support obligation directly on the child or children.
    (3)   The noncustodial parent shall owe that parent's total child support obligation as child support to the custodial parent minus any ordered payments included in the calculations made directly by the noncustodial parent on behalf of the child or children for work-related child care expenses, extraordinary medical expenses, or additional expenses under subsection (i) of this section.
  (m)   (1)   In cases of shared physical custody, the adjusted basic child support obligation shall first be divided between the parents in proportion to their respective adjusted actual incomes.
    (2)   Each parent's share of the adjusted basic child support obligation shall then be multiplied by the percentage of time the child or children spend with the other parent to determine the theoretical basic child support obligation owed to the other parent.
    (3)   Subject to the provisions of paragraphs (4) and (5) of this subsection, the parent owing the greater amount under paragraph (2) of this subsection shall owe the difference in the 2 amounts as child support.
    (4)   In addition to the amount of the child support owed under paragraph (3) of this subsection, if either parent incurs child care expenses under subsection (g) of this section, extraordinary medical expenses under subsection (h) of this section, or additional expenses under subsection (i) of this section, the expense shall be divided between the parents in proportion to their respective adjusted actual incomes. The parent not incurring the expense shall pay that parent's proportionate share to:
      (i)   the parent making direct payments to the provider of the service; or
      (ii)   the provider directly, if a court order requires direct payments to the provider.
    (5)   The amount owed under paragraph (3) of this subsection may not exceed the amount that would be owed under subsection (l) of this section if the obligor parent were a noncustodial parent.