Student loan calculator
$966.02/month principal and interest
$30,923 total interest
Principal $85,000 Interest $30,923. 27¢ of every dollar paid goes to interest.
$85,000 over 10 years at 6.52%.
Source: U.S. Department of Education, 2026-27 undergraduate rate (default). An average, not an offer.
| Plan | Payment | Total interest |
|---|---|---|
| Standard (10 years) | $966.02 | $30,923 |
| Tiered Standard (20 years) | $634.74 | $67,337 |
| Extended (15 years) | $741.38 | $48,448 |
| Extended (20 years) | $634.74 | $67,337 |
| Extended (25 years) | $574.99 | $87,497 |
Amortization schedule
First 12 months
| Month | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $504.19 | $461.83 | $84,495.81 |
| 2 | $506.93 | $459.09 | $83,988.88 |
| 3 | $509.68 | $456.34 | $83,479.20 |
| 4 | $512.45 | $453.57 | $82,966.75 |
| 5 | $515.24 | $450.79 | $82,451.51 |
| 6 | $518.04 | $447.99 | $81,933.47 |
| 7 | $520.85 | $445.17 | $81,412.62 |
| 8 | $523.68 | $442.34 | $80,888.94 |
| 9 | $526.53 | $439.50 | $80,362.41 |
| 10 | $529.39 | $436.64 | $79,833.03 |
| 11 | $532.26 | $433.76 | $79,300.76 |
| 12 | $535.16 | $430.87 | $78,765.61 |
Year by year
| Year | Principal | Interest | Balance at year end |
|---|---|---|---|
| 1 | $6,234 | $5,358 | $78,766 |
| 2 | $6,653 | $4,939 | $72,112 |
| 3 | $7,100 | $4,492 | $65,012 |
| 4 | $7,577 | $4,015 | $57,435 |
| 5 | $8,086 | $3,506 | $49,349 |
| 6 | $8,630 | $2,963 | $40,719 |
| 7 | $9,209 | $2,383 | $31,510 |
| 8 | $9,828 | $1,764 | $21,681 |
| 9 | $10,488 | $1,104 | $11,193 |
| 10 | $11,193 | $399 | $0 |
| Total | $85,000 | $30,923 | $0 |
Full schedule, all 120 payments
| Month | Principal | Interest | Balance |
|---|---|---|---|
| 1 | 504.19 | 461.83 | 84,495.81 |
| 2 | 506.93 | 459.09 | 83,988.88 |
| 3 | 509.68 | 456.34 | 83,479.20 |
| 4 | 512.45 | 453.57 | 82,966.75 |
| 5 | 515.24 | 450.79 | 82,451.51 |
| 6 | 518.04 | 447.99 | 81,933.47 |
| 7 | 520.85 | 445.17 | 81,412.62 |
| 8 | 523.68 | 442.34 | 80,888.94 |
| 9 | 526.53 | 439.50 | 80,362.41 |
| 10 | 529.39 | 436.64 | 79,833.03 |
| 11 | 532.26 | 433.76 | 79,300.76 |
| 12 | 535.16 | 430.87 | 78,765.61 |
| 13 | 538.06 | 427.96 | 78,227.54 |
| 14 | 540.99 | 425.04 | 77,686.56 |
| 15 | 543.93 | 422.10 | 77,142.63 |
| 16 | 546.88 | 419.14 | 76,595.75 |
| 17 | 549.85 | 416.17 | 76,045.90 |
| 18 | 552.84 | 413.18 | 75,493.06 |
| 19 | 555.84 | 410.18 | 74,937.21 |
| 20 | 558.86 | 407.16 | 74,378.35 |
| 21 | 561.90 | 404.12 | 73,816.45 |
| 22 | 564.95 | 401.07 | 73,251.49 |
| 23 | 568.02 | 398.00 | 72,683.47 |
| 24 | 571.11 | 394.91 | 72,112.36 |
| 25 | 574.21 | 391.81 | 71,538.15 |
| 26 | 577.33 | 388.69 | 70,960.82 |
| 27 | 580.47 | 385.55 | 70,380.35 |
| 28 | 583.62 | 382.40 | 69,796.72 |
| 29 | 586.79 | 379.23 | 69,209.93 |
| 30 | 589.98 | 376.04 | 68,619.95 |
| 31 | 593.19 | 372.84 | 68,026.76 |
| 32 | 596.41 | 369.61 | 67,430.35 |
| 33 | 599.65 | 366.37 | 66,830.70 |
| 34 | 602.91 | 363.11 | 66,227.79 |
| 35 | 606.19 | 359.84 | 65,621.60 |
| 36 | 609.48 | 356.54 | 65,012.12 |
| 37 | 612.79 | 353.23 | 64,399.33 |
| 38 | 616.12 | 349.90 | 63,783.21 |
| 39 | 619.47 | 346.56 | 63,163.75 |
| 40 | 622.83 | 343.19 | 62,540.91 |
| 41 | 626.22 | 339.81 | 61,914.69 |
| 42 | 629.62 | 336.40 | 61,285.07 |
| 43 | 633.04 | 332.98 | 60,652.03 |
| 44 | 636.48 | 329.54 | 60,015.55 |
| 45 | 639.94 | 326.08 | 59,375.62 |
| 46 | 643.42 | 322.61 | 58,732.20 |
| 47 | 646.91 | 319.11 | 58,085.29 |
| 48 | 650.43 | 315.60 | 57,434.86 |
| 49 | 653.96 | 312.06 | 56,780.90 |
| 50 | 657.51 | 308.51 | 56,123.39 |
| 51 | 661.09 | 304.94 | 55,462.30 |
| 52 | 664.68 | 301.35 | 54,797.62 |
| 53 | 668.29 | 297.73 | 54,129.34 |
| 54 | 671.92 | 294.10 | 53,457.42 |
| 55 | 675.57 | 290.45 | 52,781.84 |
| 56 | 679.24 | 286.78 | 52,102.60 |
| 57 | 682.93 | 283.09 | 51,419.67 |
| 58 | 686.64 | 279.38 | 50,733.03 |
| 59 | 690.37 | 275.65 | 50,042.65 |
| 60 | 694.12 | 271.90 | 49,348.53 |
| 61 | 697.90 | 268.13 | 48,650.63 |
| 62 | 701.69 | 264.34 | 47,948.95 |
| 63 | 705.50 | 260.52 | 47,243.44 |
| 64 | 709.33 | 256.69 | 46,534.11 |
| 65 | 713.19 | 252.84 | 45,820.92 |
| 66 | 717.06 | 248.96 | 45,103.86 |
| 67 | 720.96 | 245.06 | 44,382.90 |
| 68 | 724.88 | 241.15 | 43,658.03 |
| 69 | 728.81 | 237.21 | 42,929.21 |
| 70 | 732.77 | 233.25 | 42,196.44 |
| 71 | 736.76 | 229.27 | 41,459.68 |
| 72 | 740.76 | 225.26 | 40,718.92 |
| 73 | 744.78 | 221.24 | 39,974.14 |
| 74 | 748.83 | 217.19 | 39,225.31 |
| 75 | 752.90 | 213.12 | 38,472.41 |
| 76 | 756.99 | 209.03 | 37,715.42 |
| 77 | 761.10 | 204.92 | 36,954.32 |
| 78 | 765.24 | 200.79 | 36,189.08 |
| 79 | 769.40 | 196.63 | 35,419.69 |
| 80 | 773.58 | 192.45 | 34,646.11 |
| 81 | 777.78 | 188.24 | 33,868.33 |
| 82 | 782.01 | 184.02 | 33,086.32 |
| 83 | 786.25 | 179.77 | 32,300.07 |
| 84 | 790.53 | 175.50 | 31,509.55 |
| 85 | 794.82 | 171.20 | 30,714.72 |
| 86 | 799.14 | 166.88 | 29,915.58 |
| 87 | 803.48 | 162.54 | 29,112.10 |
| 88 | 807.85 | 158.18 | 28,304.26 |
| 89 | 812.24 | 153.79 | 27,492.02 |
| 90 | 816.65 | 149.37 | 26,675.37 |
| 91 | 821.09 | 144.94 | 25,854.28 |
| 92 | 825.55 | 140.47 | 25,028.73 |
| 93 | 830.03 | 135.99 | 24,198.70 |
| 94 | 834.54 | 131.48 | 23,364.16 |
| 95 | 839.08 | 126.95 | 22,525.08 |
| 96 | 843.64 | 122.39 | 21,681.44 |
| 97 | 848.22 | 117.80 | 20,833.22 |
| 98 | 852.83 | 113.19 | 19,980.39 |
| 99 | 857.46 | 108.56 | 19,122.93 |
| 100 | 862.12 | 103.90 | 18,260.81 |
| 101 | 866.81 | 99.22 | 17,394.00 |
| 102 | 871.52 | 94.51 | 16,522.49 |
| 103 | 876.25 | 89.77 | 15,646.24 |
| 104 | 881.01 | 85.01 | 14,765.22 |
| 105 | 885.80 | 80.22 | 13,879.43 |
| 106 | 890.61 | 75.41 | 12,988.81 |
| 107 | 895.45 | 70.57 | 12,093.36 |
| 108 | 900.32 | 65.71 | 11,193.05 |
| 109 | 905.21 | 60.82 | 10,287.84 |
| 110 | 910.13 | 55.90 | 9,377.71 |
| 111 | 915.07 | 50.95 | 8,462.64 |
| 112 | 920.04 | 45.98 | 7,542.60 |
| 113 | 925.04 | 40.98 | 6,617.56 |
| 114 | 930.07 | 35.96 | 5,687.49 |
| 115 | 935.12 | 30.90 | 4,752.37 |
| 116 | 940.20 | 25.82 | 3,812.17 |
| 117 | 945.31 | 20.71 | 2,866.86 |
| 118 | 950.45 | 15.58 | 1,916.41 |
| 119 | 955.61 | 10.41 | 960.80 |
| 120 | 960.80 | 5.22 | 0.00 |
Sources
- Federal Direct Loan rates, 2026-27. U.S. Department of Education, Federal Student Aid, loans first disbursed from July 1, 2026; retrieved September 26, 2026.
Numbers on this page last changed September 26, 2026. How they are calculated: methodology.