Math

Loan Amortization Calculator & Extra Payment Schedule

Calculate fixed-rate loan payments, total interest, a full amortization schedule, and the payoff impact of recurring extra monthly principal.

Free to use No sign-up Runs in your browser

Model a fixed-rate loan with monthly payments, then see how sending extra principal each month changes the payoff timeline and total interest.

Your entries stay in this browser. Enter every amount in the same currency unit.

This is a planning estimate for standard monthly amortization. Lender schedules can differ because of day-count rules, rounding conventions, escrow, fees, or payment timing.

Loan principal

Annual interest rate (%)

Loan term (years)

Extra monthly principal payment

Base monthly payment

1,539.29

Payment with extra

1,739.29

Estimated payoff time

22 years 2 months

Total interest

212,317.77

Interest saved

91,827.71

Months saved

Amortization schedule

Copy or download the monthly schedule if you want to review the balance path in a spreadsheet.

Amortization schedule
Payment #	Payment	Interest	Principal	Extra	Balance
1	1,739.29	1,302.08	437.21	200.00	249,562.79
2	1,739.29	1,299.81	439.49	200.00	249,123.30
3	1,739.29	1,297.52	441.78	200.00	248,681.53
4	1,739.29	1,295.22	444.08	200.00	248,237.45
5	1,739.29	1,292.90	446.39	200.00	247,791.06
6	1,739.29	1,290.58	448.71	200.00	247,342.35
7	1,739.29	1,288.24	451.05	200.00	246,891.30
8	1,739.29	1,285.89	453.40	200.00	246,437.89
9	1,739.29	1,283.53	455.76	200.00	245,982.13
10	1,739.29	1,281.16	458.14	200.00	245,524.00
11	1,739.29	1,278.77	460.52	200.00	245,063.47
12	1,739.29	1,276.37	462.92	200.00	244,600.55
13	1,739.29	1,273.96	465.33	200.00	244,135.22
14	1,739.29	1,271.54	467.76	200.00	243,667.47
15	1,739.29	1,269.10	470.19	200.00	243,197.27
16	1,739.29	1,266.65	472.64	200.00	242,724.63
17	1,739.29	1,264.19	475.10	200.00	242,249.53
18	1,739.29	1,261.72	477.58	200.00	241,771.95
19	1,739.29	1,259.23	480.06	200.00	241,291.89
20	1,739.29	1,256.73	482.56	200.00	240,809.33
21	1,739.29	1,254.22	485.08	200.00	240,324.25
22	1,739.29	1,251.69	487.60	200.00	239,836.64
23	1,739.29	1,249.15	490.14	200.00	239,346.50
24	1,739.29	1,246.60	492.70	200.00	238,853.80
25	1,739.29	1,244.03	495.26	200.00	238,358.54
26	1,739.29	1,241.45	497.84	200.00	237,860.70
27	1,739.29	1,238.86	500.44	200.00	237,360.26
28	1,739.29	1,236.25	503.04	200.00	236,857.22
29	1,739.29	1,233.63	505.66	200.00	236,351.56
30	1,739.29	1,231.00	508.30	200.00	235,843.27
31	1,739.29	1,228.35	510.94	200.00	235,332.32
32	1,739.29	1,225.69	513.60	200.00	234,818.72
33	1,739.29	1,223.01	516.28	200.00	234,302.44
34	1,739.29	1,220.33	518.97	200.00	233,783.47
35	1,739.29	1,217.62	521.67	200.00	233,261.80
36	1,739.29	1,214.91	524.39	200.00	232,737.41
37	1,739.29	1,212.17	527.12	200.00	232,210.29
38	1,739.29	1,209.43	529.86	200.00	231,680.43
39	1,739.29	1,206.67	532.62	200.00	231,147.81
40	1,739.29	1,203.89	535.40	200.00	230,612.41
41	1,739.29	1,201.11	538.19	200.00	230,074.22
42	1,739.29	1,198.30	540.99	200.00	229,533.23
43	1,739.29	1,195.49	543.81	200.00	228,989.42
44	1,739.29	1,192.65	546.64	200.00	228,442.78
45	1,739.29	1,189.81	549.49	200.00	227,893.30
46	1,739.29	1,186.94	552.35	200.00	227,340.95
47	1,739.29	1,184.07	555.23	200.00	226,785.72
48	1,739.29	1,181.18	558.12	200.00	226,227.61
49	1,739.29	1,178.27	561.02	200.00	225,666.58
50	1,739.29	1,175.35	563.95	200.00	225,102.64
51	1,739.29	1,172.41	566.88	200.00	224,535.75
52	1,739.29	1,169.46	569.84	200.00	223,965.92
53	1,739.29	1,166.49	572.80	200.00	223,393.11
54	1,739.29	1,163.51	575.79	200.00	222,817.32
55	1,739.29	1,160.51	578.79	200.00	222,238.54
56	1,739.29	1,157.49	581.80	200.00	221,656.74
57	1,739.29	1,154.46	584.83	200.00	221,071.91
58	1,739.29	1,151.42	587.88	200.00	220,484.03
59	1,739.29	1,148.35	590.94	200.00	219,893.09
60	1,739.29	1,145.28	594.02	200.00	219,299.08
61	1,739.29	1,142.18	597.11	200.00	218,701.97
62	1,739.29	1,139.07	600.22	200.00	218,101.74
63	1,739.29	1,135.95	603.35	200.00	217,498.40
64	1,739.29	1,132.80	606.49	200.00	216,891.91
65	1,739.29	1,129.65	609.65	200.00	216,282.26
66	1,739.29	1,126.47	612.82	200.00	215,669.44
67	1,739.29	1,123.28	616.01	200.00	215,053.42
68	1,739.29	1,120.07	619.22	200.00	214,434.20
69	1,739.29	1,116.84	622.45	200.00	213,811.75
70	1,739.29	1,113.60	625.69	200.00	213,186.06
71	1,739.29	1,110.34	628.95	200.00	212,557.11
72	1,739.29	1,107.07	632.22	200.00	211,924.89
73	1,739.29	1,103.78	635.52	200.00	211,289.37
74	1,739.29	1,100.47	638.83	200.00	210,650.54
75	1,739.29	1,097.14	642.15	200.00	210,008.39
76	1,739.29	1,093.79	645.50	200.00	209,362.89
77	1,739.29	1,090.43	648.86	200.00	208,714.03
78	1,739.29	1,087.05	652.24	200.00	208,061.79
79	1,739.29	1,083.66	655.64	200.00	207,406.15
80	1,739.29	1,080.24	659.05	200.00	206,747.10
81	1,739.29	1,076.81	662.49	200.00	206,084.61
82	1,739.29	1,073.36	665.94	200.00	205,418.68
83	1,739.29	1,069.89	669.40	200.00	204,749.27
84	1,739.29	1,066.40	672.89	200.00	204,076.38
85	1,739.29	1,062.90	676.40	200.00	203,399.99
86	1,739.29	1,059.37	679.92	200.00	202,720.07
87	1,739.29	1,055.83	683.46	200.00	202,036.61
88	1,739.29	1,052.27	687.02	200.00	201,349.59
89	1,739.29	1,048.70	690.60	200.00	200,658.99
90	1,739.29	1,045.10	694.19	200.00	199,964.80
91	1,739.29	1,041.48	697.81	200.00	199,266.99
92	1,739.29	1,037.85	701.44	200.00	198,565.55
93	1,739.29	1,034.20	705.10	200.00	197,860.45
94	1,739.29	1,030.52	708.77	200.00	197,151.68
95	1,739.29	1,026.83	712.46	200.00	196,439.22
96	1,739.29	1,023.12	716.17	200.00	195,723.04
97	1,739.29	1,019.39	719.90	200.00	195,003.14
98	1,739.29	1,015.64	723.65	200.00	194,279.49
99	1,739.29	1,011.87	727.42	200.00	193,552.07
100	1,739.29	1,008.08	731.21	200.00	192,820.86
101	1,739.29	1,004.28	735.02	200.00	192,085.84
102	1,739.29	1,000.45	738.85	200.00	191,347.00
103	1,739.29	996.60	742.69	200.00	190,604.30
104	1,739.29	992.73	746.56	200.00	189,857.74
105	1,739.29	988.84	750.45	200.00	189,107.29
106	1,739.29	984.93	754.36	200.00	188,352.93
107	1,739.29	981.00	758.29	200.00	187,594.64
108	1,739.29	977.06	762.24	200.00	186,832.41
109	1,739.29	973.09	766.21	200.00	186,066.20
110	1,739.29	969.09	770.20	200.00	185,296.00
111	1,739.29	965.08	774.21	200.00	184,521.79
112	1,739.29	961.05	778.24	200.00	183,743.55
113	1,739.29	957.00	782.30	200.00	182,961.25
114	1,739.29	952.92	786.37	200.00	182,174.88
115	1,739.29	948.83	790.47	200.00	181,384.42
116	1,739.29	944.71	794.58	200.00	180,589.84
117	1,739.29	940.57	798.72	200.00	179,791.11
118	1,739.29	936.41	802.88	200.00	178,988.23
119	1,739.29	932.23	807.06	200.00	178,181.17
120	1,739.29	928.03	811.27	200.00	177,369.90
121	1,739.29	923.80	815.49	200.00	176,554.41
122	1,739.29	919.55	819.74	200.00	175,734.67
123	1,739.29	915.28	824.01	200.00	174,910.67
124	1,739.29	910.99	828.30	200.00	174,082.37
125	1,739.29	906.68	832.61	200.00	173,249.75
126	1,739.29	902.34	836.95	200.00	172,412.80
127	1,739.29	897.98	841.31	200.00	171,571.49
128	1,739.29	893.60	845.69	200.00	170,725.80
129	1,739.29	889.20	850.10	200.00	169,875.70
130	1,739.29	884.77	854.52	200.00	169,021.18
131	1,739.29	880.32	858.97	200.00	168,162.21
132	1,739.29	875.84	863.45	200.00	167,298.76
133	1,739.29	871.35	867.95	200.00	166,430.81
134	1,739.29	866.83	872.47	200.00	165,558.35
135	1,739.29	862.28	877.01	200.00	164,681.34
136	1,739.29	857.72	881.58	200.00	163,799.76
137	1,739.29	853.12	886.17	200.00	162,913.59
138	1,739.29	848.51	890.78	200.00	162,022.81
139	1,739.29	843.87	895.42	200.00	161,127.38
140	1,739.29	839.21	900.09	200.00	160,227.29
141	1,739.29	834.52	904.78	200.00	159,322.52
142	1,739.29	829.80	909.49	200.00	158,413.03
143	1,739.29	825.07	914.23	200.00	157,498.80
144	1,739.29	820.31	918.99	200.00	156,579.82
145	1,739.29	815.52	923.77	200.00	155,656.04
146	1,739.29	810.71	928.58	200.00	154,727.46
147	1,739.29	805.87	933.42	200.00	153,794.04
148	1,739.29	801.01	938.28	200.00	152,855.76
149	1,739.29	796.12	943.17	200.00	151,912.59
150	1,739.29	791.21	948.08	200.00	150,964.51
151	1,739.29	786.27	953.02	200.00	150,011.49
152	1,739.29	781.31	957.98	200.00	149,053.50
153	1,739.29	776.32	962.97	200.00	148,090.53
154	1,739.29	771.30	967.99	200.00	147,122.54
155	1,739.29	766.26	973.03	200.00	146,149.51
156	1,739.29	761.20	978.10	200.00	145,171.41
157	1,739.29	756.10	983.19	200.00	144,188.22
158	1,739.29	750.98	988.31	200.00	143,199.91
159	1,739.29	745.83	993.46	200.00	142,206.45
160	1,739.29	740.66	998.63	200.00	141,207.82
161	1,739.29	735.46	1,003.84	200.00	140,203.98
162	1,739.29	730.23	1,009.06	200.00	139,194.92
163	1,739.29	724.97	1,014.32	200.00	138,180.60
164	1,739.29	719.69	1,019.60	200.00	137,160.99
165	1,739.29	714.38	1,024.91	200.00	136,136.08
166	1,739.29	709.04	1,030.25	200.00	135,105.83
167	1,739.29	703.68	1,035.62	200.00	134,070.21
168	1,739.29	698.28	1,041.01	200.00	133,029.20
169	1,739.29	692.86	1,046.43	200.00	131,982.77
170	1,739.29	687.41	1,051.88	200.00	130,930.89
171	1,739.29	681.93	1,057.36	200.00	129,873.53
172	1,739.29	676.42	1,062.87	200.00	128,810.66
173	1,739.29	670.89	1,068.40	200.00	127,742.25
174	1,739.29	665.32	1,073.97	200.00	126,668.29
175	1,739.29	659.73	1,079.56	200.00	125,588.72
176	1,739.29	654.11	1,085.19	200.00	124,503.54
177	1,739.29	648.46	1,090.84	200.00	123,412.70
178	1,739.29	642.77	1,096.52	200.00	122,316.18
179	1,739.29	637.06	1,102.23	200.00	121,213.95
180	1,739.29	631.32	1,107.97	200.00	120,105.98
181	1,739.29	625.55	1,113.74	200.00	118,992.24
182	1,739.29	619.75	1,119.54	200.00	117,872.70
183	1,739.29	613.92	1,125.37	200.00	116,747.33
184	1,739.29	608.06	1,131.23	200.00	115,616.09
185	1,739.29	602.17	1,137.13	200.00	114,478.97
186	1,739.29	596.24	1,143.05	200.00	113,335.92
187	1,739.29	590.29	1,149.00	200.00	112,186.92
188	1,739.29	584.31	1,154.99	200.00	111,031.93
189	1,739.29	578.29	1,161.00	200.00	109,870.93
190	1,739.29	572.24	1,167.05	200.00	108,703.88
191	1,739.29	566.17	1,173.13	200.00	107,530.75
192	1,739.29	560.06	1,179.24	200.00	106,351.52
193	1,739.29	553.91	1,185.38	200.00	105,166.14
194	1,739.29	547.74	1,191.55	200.00	103,974.58
195	1,739.29	541.53	1,197.76	200.00	102,776.83
196	1,739.29	535.30	1,204.00	200.00	101,572.83
197	1,739.29	529.03	1,210.27	200.00	100,362.56
198	1,739.29	522.72	1,216.57	200.00	99,145.99
199	1,739.29	516.39	1,222.91	200.00	97,923.08
200	1,739.29	510.02	1,229.28	200.00	96,693.81
201	1,739.29	503.61	1,235.68	200.00	95,458.13
202	1,739.29	497.18	1,242.12	200.00	94,216.01
203	1,739.29	490.71	1,248.58	200.00	92,967.43
204	1,739.29	484.21	1,255.09	200.00	91,712.34
205	1,739.29	477.67	1,261.62	200.00	90,450.71
206	1,739.29	471.10	1,268.20	200.00	89,182.52
207	1,739.29	464.49	1,274.80	200.00	87,907.72
208	1,739.29	457.85	1,281.44	200.00	86,626.28
209	1,739.29	451.18	1,288.11	200.00	85,338.16
210	1,739.29	444.47	1,294.82	200.00	84,043.34
211	1,739.29	437.73	1,301.57	200.00	82,741.77
212	1,739.29	430.95	1,308.35	200.00	81,433.43
213	1,739.29	424.13	1,315.16	200.00	80,118.27
214	1,739.29	417.28	1,322.01	200.00	78,796.26
215	1,739.29	410.40	1,328.90	200.00	77,467.36
216	1,739.29	403.48	1,335.82	200.00	76,131.54
217	1,739.29	396.52	1,342.77	200.00	74,788.77
218	1,739.29	389.52	1,349.77	200.00	73,439.00
219	1,739.29	382.49	1,356.80	200.00	72,082.20
220	1,739.29	375.43	1,363.86	200.00	70,718.34
221	1,739.29	368.32	1,370.97	200.00	69,347.37
222	1,739.29	361.18	1,378.11	200.00	67,969.26
223	1,739.29	354.01	1,385.29	200.00	66,583.97
224	1,739.29	346.79	1,392.50	200.00	65,191.47
225	1,739.29	339.54	1,399.75	200.00	63,791.72
226	1,739.29	332.25	1,407.04	200.00	62,384.67
227	1,739.29	324.92	1,414.37	200.00	60,970.30
228	1,739.29	317.55	1,421.74	200.00	59,548.56
229	1,739.29	310.15	1,429.14	200.00	58,119.42
230	1,739.29	302.71	1,436.59	200.00	56,682.83
231	1,739.29	295.22	1,444.07	200.00	55,238.76
232	1,739.29	287.70	1,451.59	200.00	53,787.17
233	1,739.29	280.14	1,459.15	200.00	52,328.02
234	1,739.29	272.54	1,466.75	200.00	50,861.26
235	1,739.29	264.90	1,474.39	200.00	49,386.87
236	1,739.29	257.22	1,482.07	200.00	47,904.80
237	1,739.29	249.50	1,489.79	200.00	46,415.02
238	1,739.29	241.74	1,497.55	200.00	44,917.47
239	1,739.29	233.95	1,505.35	200.00	43,412.12
240	1,739.29	226.10	1,513.19	200.00	41,898.93
241	1,739.29	218.22	1,521.07	200.00	40,377.86
242	1,739.29	210.30	1,528.99	200.00	38,848.87
243	1,739.29	202.34	1,536.96	200.00	37,311.92
244	1,739.29	194.33	1,544.96	200.00	35,766.96
245	1,739.29	186.29	1,553.01	200.00	34,213.95
246	1,739.29	178.20	1,561.10	200.00	32,652.85
247	1,739.29	170.07	1,569.23	200.00	31,083.63
248	1,739.29	161.89	1,577.40	200.00	29,506.23
249	1,739.29	153.68	1,585.61	200.00	27,920.61
250	1,739.29	145.42	1,593.87	200.00	26,326.74
251	1,739.29	137.12	1,602.17	200.00	24,724.57
252	1,739.29	128.77	1,610.52	200.00	23,114.05
253	1,739.29	120.39	1,618.91	200.00	21,495.14
254	1,739.29	111.95	1,627.34	200.00	19,867.80
255	1,739.29	103.48	1,635.81	200.00	18,231.98
256	1,739.29	94.96	1,644.33	200.00	16,587.65
257	1,739.29	86.39	1,652.90	200.00	14,934.75
258	1,739.29	77.79	1,661.51	200.00	13,273.24
259	1,739.29	69.13	1,670.16	200.00	11,603.08
260	1,739.29	60.43	1,678.86	200.00	9,924.22
261	1,739.29	51.69	1,687.60	200.00	8,236.62
262	1,739.29	42.90	1,696.39	200.00	6,540.22
263	1,739.29	34.06	1,705.23	200.00	4,834.99
264	1,739.29	25.18	1,714.11	200.00	3,120.88
265	1,739.29	16.25	1,723.04	200.00	1,397.84
266	1,405.12	7.28	1,397.84	0.00	0.00

What is a loan amortization calculator?

A loan amortization calculator breaks a fixed-rate installment loan into monthly interest and principal payments over the full term. It helps you see the required payment, how much interest accumulates, how fast the balance falls, and how recurring extra principal changes the payoff timeline. This is useful for auto loans, personal loans, student loans, and any standard debt that amortizes with equal monthly payments.

How to use the loan amortization calculator

1Enter the original loan principal, the fixed annual interest rate, and the term in whole years so the calculator can derive the standard monthly payment.
2Add an optional extra principal amount if you want to test the effect of paying more than the scheduled amount every month.
3Review the monthly payment, payoff time, interest saved, and full amortization table, then copy or download the schedule if you need to compare lenders or budgets elsewhere.

Common loan amortization use cases

Planning an early payoff strategy

Test how much faster a car, student, or personal loan ends when you add the same extra principal payment every month.

Checking lender payment quotes

Compare the quoted payment against a transparent fixed-rate amortization formula before you accept an offer or refinance.

Building a payoff spreadsheet

Copy or download the schedule when you need month-by-month principal and interest details for budgeting, reporting, or debt snowball planning.

Frequently asked questions

Does the calculator include taxes, insurance, or fees?

No. This page focuses on the loan itself: principal, rate, term, and optional recurring extra principal. Escrow, insurance, late fees, and lender-specific servicing charges can change the real cash flow.

Why might the payoff date differ from my lender statement?

Real statements can differ by a few cents or days because lenders may round each payment differently, accrue interest on specific calendar rules, or apply extra payments only after certain posting dates. Use this tool for planning, then confirm details with the loan servicer.

What counts as an extra payment here?

The extra payment is modeled as additional principal sent every month alongside the normal scheduled payment. One-time lump-sum prepayments are not shown separately on this version.

Tool workspace