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Mortgage Amortization Calculator

See how mortgage payments divide between principal and interest, and how extra payments change the balance and payoff schedule.

Currency: USD

Enter all amounts in USD. Changing currency keeps numbers unchanged; no exchange rate is applied.

Your inputs

Extra payments & additional assumptions
First payment month

Calculations run in your browser. No account needed.

EXAMPLE RESULTCalculated locally
Initial monthly ownership cost
$2,422.62
Regular monthly payment
$2,022.62
Loan amount
$320,000.00
Total interest
$408,142.36
Total payments
$728,142.36
Payoff time
360 months
Down payment
$80,000.00
Ownership costs during loan
$144,000.00

About this result

Ownership cost excludes extra principal payments. Insurance input stays constant except for the entered growth; mortgage-insurance cancellation is not automatic.

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My workspace

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Loan balance over time

USD
Balance
079.9K159.9K239.8K319.7K1180360
Payment 360
Balance$0.00

Loan payment breakdown

USD

Principal and interest over the loan term.

Total$728,142.36
  • Principal$320,000.0043.9%
  • Interest$408,142.3656.1%

Detailed breakdown

All 360 rows

The complete calculation, row by row. Amounts in USD.

Swipe or scroll horizontally for more columns.
Detailed breakdown · All 360 rows
PaymentMonthPayment amount (USD)Principal (USD)Interest (USD)Balance (USD)
12026-112,022.62289.281,733.33319,710.72
22026-122,022.62290.851,731.77319,419.86
32027-012,022.62292.431,730.19319,127.44
42027-022,022.62294.011,728.61318,833.43
52027-032,022.62295.601,727.01318,537.82
62027-042,022.62297.201,725.41318,240.62
72027-052,022.62298.811,723.80317,941.80
82027-062,022.62300.431,722.18317,641.37
92027-072,022.62302.061,720.56317,339.31
102027-082,022.62303.701,718.92317,035.62
112027-092,022.62305.341,717.28316,730.27
122027-102,022.62307.001,715.62316,423.28
132027-112,022.62308.661,713.96316,114.62
142027-122,022.62310.331,712.29315,804.29
152028-012,022.62312.011,710.61315,492.28
162028-022,022.62313.701,708.92315,178.58
172028-032,022.62315.401,707.22314,863.18
182028-042,022.62317.111,705.51314,546.07
192028-052,022.62318.831,703.79314,227.24
202028-062,022.62320.551,702.06313,906.69
212028-072,022.62322.291,700.33313,584.40
222028-082,022.62324.041,698.58313,260.36
232028-092,022.62325.791,696.83312,934.57
242028-102,022.62327.561,695.06312,607.02
252028-112,022.62329.331,693.29312,277.69
262028-122,022.62331.111,691.50311,946.57
272029-012,022.62332.911,689.71311,613.67
282029-022,022.62334.711,687.91311,278.96
292029-032,022.62336.521,686.09310,942.43
302029-042,022.62338.351,684.27310,604.09
312029-052,022.62340.181,682.44310,263.91
322029-062,022.62342.021,680.60309,921.89
332029-072,022.62343.871,678.74309,578.01
342029-082,022.62345.741,676.88309,232.28
352029-092,022.62347.611,675.01308,884.67
362029-102,022.62349.491,673.13308,535.17
372029-112,022.62351.391,671.23308,183.79
382029-122,022.62353.291,669.33307,830.50
392030-012,022.62355.201,667.42307,475.30
402030-022,022.62357.131,665.49307,118.17
412030-032,022.62359.061,663.56306,759.11
422030-042,022.62361.011,661.61306,398.10
432030-052,022.62362.961,659.66306,035.14
442030-062,022.62364.931,657.69305,670.22
452030-072,022.62366.901,655.71305,303.31
462030-082,022.62368.891,653.73304,934.42
472030-092,022.62370.891,651.73304,563.53
482030-102,022.62372.901,649.72304,190.63
492030-112,022.62374.921,647.70303,815.71
502030-122,022.62376.951,645.67303,438.76
512031-012,022.62378.991,643.63303,059.77
522031-022,022.62381.041,641.57302,678.73
532031-032,022.62383.111,639.51302,295.62
542031-042,022.62385.181,637.43301,910.44
552031-052,022.62387.271,635.35301,523.17
562031-062,022.62389.371,633.25301,133.80
572031-072,022.62391.481,631.14300,742.33
582031-082,022.62393.601,629.02300,348.73
592031-092,022.62395.731,626.89299,953.00
602031-102,022.62397.871,624.75299,555.13
612031-112,022.62400.031,622.59299,155.10
622031-122,022.62402.191,620.42298,752.91
632032-012,022.62404.371,618.24298,348.53
642032-022,022.62406.561,616.05297,941.97
652032-032,022.62408.771,613.85297,533.20
662032-042,022.62410.981,611.64297,122.23
672032-052,022.62413.211,609.41296,709.02
682032-062,022.62415.441,607.17296,293.58
692032-072,022.62417.691,604.92295,875.88
702032-082,022.62419.961,602.66295,455.93
712032-092,022.62422.231,600.39295,033.69
722032-102,022.62424.521,598.10294,609.18
732032-112,022.62426.821,595.80294,182.36
742032-122,022.62429.131,593.49293,753.23
752033-012,022.62431.451,591.16293,321.77
762033-022,022.62433.791,588.83292,887.98
772033-032,022.62436.141,586.48292,451.84
782033-042,022.62438.501,584.11292,013.34
792033-052,022.62440.881,581.74291,572.46
802033-062,022.62443.271,579.35291,129.19
812033-072,022.62445.671,576.95290,683.52
822033-082,022.62448.081,574.54290,235.44
832033-092,022.62450.511,572.11289,784.93
842033-102,022.62452.951,569.67289,331.98
852033-112,022.62455.401,567.21288,876.58
862033-122,022.62457.871,564.75288,418.71
872034-012,022.62460.351,562.27287,958.36
882034-022,022.62462.841,559.77287,495.52
892034-032,022.62465.351,557.27287,030.17
902034-042,022.62467.871,554.75286,562.30
912034-052,022.62470.411,552.21286,091.89
922034-062,022.62472.951,549.66285,618.94
932034-072,022.62475.521,547.10285,143.42
942034-082,022.62478.091,544.53284,665.33
952034-092,022.62480.681,541.94284,184.65
962034-102,022.62483.281,539.33283,701.37
972034-112,022.62485.901,536.72283,215.47
982034-122,022.62488.531,534.08282,726.93
992035-012,022.62491.181,531.44282,235.75
1002035-022,022.62493.841,528.78281,741.91
1012035-032,022.62496.521,526.10281,245.40
1022035-042,022.62499.211,523.41280,746.19
1032035-052,022.62501.911,520.71280,244.28
1042035-062,022.62504.631,517.99279,739.65
1052035-072,022.62507.361,515.26279,232.29
1062035-082,022.62510.111,512.51278,722.18
1072035-092,022.62512.871,509.75278,209.31
1082035-102,022.62515.651,506.97277,693.66
1092035-112,022.62518.441,504.17277,175.22
1102035-122,022.62521.251,501.37276,653.96
1112036-012,022.62524.081,498.54276,129.89
1122036-022,022.62526.911,495.70275,602.97
1132036-032,022.62529.771,492.85275,073.21
1142036-042,022.62532.641,489.98274,540.57
1152036-052,022.62535.521,487.09274,005.05
1162036-062,022.62538.421,484.19273,466.62
1172036-072,022.62541.341,481.28272,925.28
1182036-082,022.62544.271,478.35272,381.01
1192036-092,022.62547.221,475.40271,833.79
1202036-102,022.62550.181,472.43271,283.60
1212036-112,022.62553.161,469.45270,730.44
1222036-122,022.62556.161,466.46270,174.28
1232037-012,022.62559.171,463.44269,615.10
1242037-022,022.62562.201,460.42269,052.90
1252037-032,022.62565.251,457.37268,487.65
1262037-042,022.62568.311,454.31267,919.34
1272037-052,022.62571.391,451.23267,347.96
1282037-062,022.62574.481,448.13266,773.47
1292037-072,022.62577.591,445.02266,195.88
1302037-082,022.62580.721,441.89265,615.16
1312037-092,022.62583.871,438.75265,031.29
1322037-102,022.62587.031,435.59264,444.26
1332037-112,022.62590.211,432.41263,854.04
1342037-122,022.62593.411,429.21263,260.64
1352038-012,022.62596.621,426.00262,664.01
1362038-022,022.62599.851,422.76262,064.16
1372038-032,022.62603.101,419.51261,461.06
1382038-042,022.62606.371,416.25260,854.69
1392038-052,022.62609.651,412.96260,245.03
1402038-062,022.62612.961,409.66259,632.07
1412038-072,022.62616.281,406.34259,015.80
1422038-082,022.62619.621,403.00258,396.18
1432038-092,022.62622.971,399.65257,773.21
1442038-102,022.62626.351,396.27257,146.86
1452038-112,022.62629.741,392.88256,517.12
1462038-122,022.62633.151,389.47255,883.97
1472039-012,022.62636.581,386.04255,247.39
1482039-022,022.62640.031,382.59254,607.37
1492039-032,022.62643.491,379.12253,963.87
1502039-042,022.62646.981,375.64253,316.89
1512039-052,022.62650.481,372.13252,666.41
1522039-062,022.62654.011,368.61252,012.40
1532039-072,022.62657.551,365.07251,354.85
1542039-082,022.62661.111,361.51250,693.74
1552039-092,022.62664.691,357.92250,029.04
1562039-102,022.62668.291,354.32249,360.75
1572039-112,022.62671.911,350.70248,688.84
1582039-122,022.62675.551,347.06248,013.28
1592040-012,022.62679.211,343.41247,334.07
1602040-022,022.62682.891,339.73246,651.18
1612040-032,022.62686.591,336.03245,964.59
1622040-042,022.62690.311,332.31245,274.28
1632040-052,022.62694.051,328.57244,580.23
1642040-062,022.62697.811,324.81243,882.42
1652040-072,022.62701.591,321.03243,180.84
1662040-082,022.62705.391,317.23242,475.45
1672040-092,022.62709.211,313.41241,766.24
1682040-102,022.62713.051,309.57241,053.19
1692040-112,022.62716.911,305.70240,336.27
1702040-122,022.62720.801,301.82239,615.48
1712041-012,022.62724.701,297.92238,890.78
1722041-022,022.62728.631,293.99238,162.15
1732041-032,022.62732.571,290.04237,429.58
1742041-042,022.62736.541,286.08236,693.04
1752041-052,022.62740.531,282.09235,952.51
1762041-062,022.62744.541,278.08235,207.97
1772041-072,022.62748.571,274.04234,459.39
1782041-082,022.62752.631,269.99233,706.76
1792041-092,022.62756.711,265.91232,950.06
1802041-102,022.62760.801,261.81232,189.25
1812041-112,022.62764.931,257.69231,424.33
1822041-122,022.62769.071,253.55230,655.26
1832042-012,022.62773.241,249.38229,882.02
1842042-022,022.62777.421,245.19229,104.60
1852042-032,022.62781.631,240.98228,322.96
1862042-042,022.62785.871,236.75227,537.10
1872042-052,022.62790.131,232.49226,746.97
1882042-062,022.62794.401,228.21225,952.57
1892042-072,022.62798.711,223.91225,153.86
1902042-082,022.62803.031,219.58224,350.82
1912042-092,022.62807.381,215.23223,543.44
1922042-102,022.62811.761,210.86222,731.68
1932042-112,022.62816.151,206.46221,915.53
1942042-122,022.62820.581,202.04221,094.95
1952043-012,022.62825.021,197.60220,269.93
1962043-022,022.62829.491,193.13219,440.44
1972043-032,022.62833.981,188.64218,606.46
1982043-042,022.62838.501,184.12217,767.96
1992043-052,022.62843.041,179.58216,924.92
2002043-062,022.62847.611,175.01216,077.31
2012043-072,022.62852.201,170.42215,225.11
2022043-082,022.62856.811,165.80214,368.30
2032043-092,022.62861.461,161.16213,506.84
2042043-102,022.62866.121,156.50212,640.72
2052043-112,022.62870.811,151.80211,769.91
2062043-122,022.62875.531,147.09210,894.38
2072044-012,022.62880.271,142.34210,014.10
2082044-022,022.62885.041,137.58209,129.06
2092044-032,022.62889.841,132.78208,239.23
2102044-042,022.62894.661,127.96207,344.57
2112044-052,022.62899.501,123.12206,445.07
2122044-062,022.62904.371,118.24205,540.70
2132044-072,022.62909.271,113.35204,631.42
2142044-082,022.62914.201,108.42203,717.23
2152044-092,022.62919.151,103.47202,798.08
2162044-102,022.62924.131,098.49201,873.95
2172044-112,022.62929.131,093.48200,944.82
2182044-122,022.62934.171,088.45200,010.65
2192045-012,022.62939.231,083.39199,071.42
2202045-022,022.62944.311,078.30198,127.11
2212045-032,022.62949.431,073.19197,177.68
2222045-042,022.62954.571,068.05196,223.11
2232045-052,022.62959.741,062.88195,263.37
2242045-062,022.62964.941,057.68194,298.42
2252045-072,022.62970.171,052.45193,328.26
2262045-082,022.62975.421,047.19192,352.83
2272045-092,022.62980.711,041.91191,372.13
2282045-102,022.62986.021,036.60190,386.11
2292045-112,022.62991.361,031.26189,394.75
2302045-122,022.62996.731,025.89188,398.02
2312046-012,022.621,002.131,020.49187,395.89
2322046-022,022.621,007.561,015.06186,388.33
2332046-032,022.621,013.011,009.60185,375.32
2342046-042,022.621,018.501,004.12184,356.82
2352046-052,022.621,024.02998.60183,332.80
2362046-062,022.621,029.57993.05182,303.24
2372046-072,022.621,035.14987.48181,268.09
2382046-082,022.621,040.75981.87180,227.34
2392046-092,022.621,046.39976.23179,180.96
2402046-102,022.621,052.05970.56178,128.90
2412046-112,022.621,057.75964.86177,071.15
2422046-122,022.621,063.48959.14176,007.67
2432047-012,022.621,069.24953.37174,938.43
2442047-022,022.621,075.03947.58173,863.39
2452047-032,022.621,080.86941.76172,782.53
2462047-042,022.621,086.71935.91171,695.82
2472047-052,022.621,092.60930.02170,603.22
2482047-062,022.621,098.52924.10169,504.71
2492047-072,022.621,104.47918.15168,400.24
2502047-082,022.621,110.45912.17167,289.79
2512047-092,022.621,116.46906.15166,173.32
2522047-102,022.621,122.51900.11165,050.81
2532047-112,022.621,128.59894.03163,922.22
2542047-122,022.621,134.71887.91162,787.51
2552048-012,022.621,140.85881.77161,646.66
2562048-022,022.621,147.03875.59160,499.63
2572048-032,022.621,153.24869.37159,346.39
2582048-042,022.621,159.49863.13158,186.89
2592048-052,022.621,165.77856.85157,021.12
2602048-062,022.621,172.09850.53155,849.04
2612048-072,022.621,178.44844.18154,670.60
2622048-082,022.621,184.82837.80153,485.78
2632048-092,022.621,191.24831.38152,294.55
2642048-102,022.621,197.69824.93151,096.86
2652048-112,022.621,204.18818.44149,892.68
2662048-122,022.621,210.70811.92148,681.98
2672049-012,022.621,217.26805.36147,464.72
2682049-022,022.621,223.85798.77146,240.87
2692049-032,022.621,230.48792.14145,010.39
2702049-042,022.621,237.14785.47143,773.25
2712049-052,022.621,243.85778.77142,529.40
2722049-062,022.621,250.58772.03141,278.82
2732049-072,022.621,257.36765.26140,021.46
2742049-082,022.621,264.17758.45138,757.30
2752049-092,022.621,271.02751.60137,486.28
2762049-102,022.621,277.90744.72136,208.38
2772049-112,022.621,284.82737.80134,923.56
2782049-122,022.621,291.78730.84133,631.78
2792050-012,022.621,298.78723.84132,333.00
2802050-022,022.621,305.81716.80131,027.18
2812050-032,022.621,312.89709.73129,714.30
2822050-042,022.621,320.00702.62128,394.30
2832050-052,022.621,327.15695.47127,067.15
2842050-062,022.621,334.34688.28125,732.81
2852050-072,022.621,341.56681.05124,391.25
2862050-082,022.621,348.83673.79123,042.41
2872050-092,022.621,356.14666.48121,686.28
2882050-102,022.621,363.48659.13120,322.79
2892050-112,022.621,370.87651.75118,951.92
2902050-122,022.621,378.29644.32117,573.63
2912051-012,022.621,385.76636.86116,187.87
2922051-022,022.621,393.27629.35114,794.60
2932051-032,022.621,400.81621.80113,393.79
2942051-042,022.621,408.40614.22111,985.39
2952051-052,022.621,416.03606.59110,569.36
2962051-062,022.621,423.70598.92109,145.66
2972051-072,022.621,431.41591.21107,714.24
2982051-082,022.621,439.17583.45106,275.08
2992051-092,022.621,446.96575.66104,828.12
3002051-102,022.621,454.80567.82103,373.32
3012051-112,022.621,462.68559.94101,910.64
3022051-122,022.621,470.60552.02100,440.04
3032052-012,022.621,478.57544.0598,961.47
3042052-022,022.621,486.58536.0497,474.89
3052052-032,022.621,494.63527.9995,980.27
3062052-042,022.621,502.72519.8994,477.54
3072052-052,022.621,510.86511.7592,966.68
3082052-062,022.621,519.05503.5791,447.63
3092052-072,022.621,527.28495.3489,920.35
3102052-082,022.621,535.55487.0788,384.80
3112052-092,022.621,543.87478.7586,840.94
3122052-102,022.621,552.23470.3985,288.71
3132052-112,022.621,560.64461.9883,728.07
3142052-122,022.621,569.09453.5382,158.98
3152053-012,022.621,577.59445.0380,581.39
3162053-022,022.621,586.14436.4878,995.25
3172053-032,022.621,594.73427.8977,400.53
3182053-042,022.621,603.36419.2575,797.16
3192053-052,022.621,612.05410.5774,185.11
3202053-062,022.621,620.78401.8472,564.33
3212053-072,022.621,629.56393.0670,934.77
3222053-082,022.621,638.39384.2369,296.38
3232053-092,022.621,647.26375.3667,649.12
3242053-102,022.621,656.18366.4365,992.94
3252053-112,022.621,665.16357.4664,327.78
3262053-122,022.621,674.18348.4462,653.60
3272054-012,022.621,683.24339.3760,970.36
3282054-022,022.621,692.36330.2659,278.00
3292054-032,022.621,701.53321.0957,576.47
3302054-042,022.621,710.75311.8755,865.73
3312054-052,022.621,720.01302.6154,145.71
3322054-062,022.621,729.33293.2952,416.38
3332054-072,022.621,738.70283.9250,677.69
3342054-082,022.621,748.11274.5048,929.58
3352054-092,022.621,757.58265.0447,171.99
3362054-102,022.621,767.10255.5145,404.89
3372054-112,022.621,776.67245.9443,628.22
3382054-122,022.621,786.30236.3241,841.92
3392055-012,022.621,795.97226.6440,045.94
3402055-022,022.621,805.70216.9238,240.24
3412055-032,022.621,815.48207.1336,424.76
3422055-042,022.621,825.32197.3034,599.44
3432055-052,022.621,835.20187.4132,764.24
3442055-062,022.621,845.14177.4730,919.09
3452055-072,022.621,855.14167.4829,063.95
3462055-082,022.621,865.19157.4327,198.77
3472055-092,022.621,875.29147.3325,323.47
3482055-102,022.621,885.45137.1723,438.03
3492055-112,022.621,895.66126.9621,542.36
3502055-122,022.621,905.93116.6919,636.43
3512056-012,022.621,916.25106.3617,720.18
3522056-022,022.621,926.6395.9815,793.55
3532056-032,022.621,937.0785.5513,856.48
3542056-042,022.621,947.5675.0611,908.92
3552056-052,022.621,958.1164.519,950.81
3562056-062,022.621,968.7253.907,982.09
3572056-072,022.621,979.3843.246,002.71
3582056-082,022.621,990.1032.514,012.60
3592056-092,022.622,000.8821.732,011.72
3602056-102,022.622,011.7210.900.00

How it works

A useful distinction

Half the term is not half repaid

With a positive fixed rate and no extra payments, more than half the original principal remains halfway through an amortizing mortgage. Use the balance column for your planned sale date rather than dividing the starting loan proportionally.

Reading a mortgage amortization schedule

The amortization schedule shows how each mortgage payment is divided between interest and principal. Look at the remaining balance at the date you expect to sell or refinance, as well as the total interest over the full term. A lower outstanding balance does not mean that every payment went toward principal; the interest column explains the difference.

Mortgage amortization: formula and assumptions

Loan = price × (1−down payment%). Monthly payment = Pr/[1−(1+r)^−n].

The schedule assumes a fixed interest rate over the entered amortization period. Ownership costs are tracked separately from loan principal and interest.

Worked example

Reference example currency: USD. These fixed examples do not change with your calculator preferences.

Using the Mortgage amortization example:

Inputs
Home price ($)
400000
Down payment (%)
20
Annual interest rate (%)
6.5
Term (years)
30
Annual property tax ($)
3600
Annual home insurance ($)
1200
Monthly mortgage insurance ($)
0
Monthly HOA fees ($)
0
Other monthly ownership costs ($)
0
Annual tax increase (%)
0
Annual insurance increase (%)
0
Annual HOA increase (%)
0
Extra monthly principal ($)
0
Extra annual principal ($)
0
One-time extra principal ($)
0
One-time payment month
12
First payment month
2026-11-01
Method

Loan = price × (1−down payment%). Monthly payment = Pr/[1−(1+r)^−n].

Result

Example result

Initial monthly ownership cost: $2,422.62

Regular monthly payment: $2,022.62

Loan amount: $320,000.00

Total interest: $408,142.36

Total payments: $728,142.36

Payoff time: 360 months

Down payment: $80,000.00

Ownership costs during loan: $144,000.00

  • Ownership cost excludes extra principal payments. Insurance input stays constant except for the entered growth; mortgage-insurance cancellation is not automatic.

These are illustrative inputs. Change the values to explore a different scenario.

What to keep in mind

This is an estimate, not a loan offer. Taxes, insurance, mortgage-insurance cancellation, renewal terms, and fees depend on your agreement.

Formula references

References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.

Common questions

Why does the interest share fall over time?

Interest is calculated on the remaining balance. As principal falls, less of a fixed payment goes toward interest.

Does the schedule predict future changes in mortgage rates?

No. It uses the entered fixed rate throughout the term; variable-rate adjustments and refinancing require a different scenario.

Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.