In: Accounting
After graduating you have 55,000 in student debt with an interest rate of 9% compounded annually. Assume an annual payment over the next 10 years to make the problem simpler. After making 2 years of payments, you attend a social event hosted by SOFI and are considering refinancing your debt. The new refinanced interest rate would be 4.5% over a new 10-year term. You are in the 25% tax bracket. How much are you saving after taxes in year 3 of the original term if you refinance? Assume, again for simplicity, that all your Student loan interest paid is an itemized deduction on your personal income tax return. Round to the nearest dollar for all your calculations.
Finding the monthly payment ,using the PV of annuity formula, |
55000=Pmt.*(1-1.09^-10)/0.09 |
8570 |
Original loan amortisation table | ||||
Year | Annuity | Tow.Int. | Tow.Princ. | Princ.Bal |
0 | 55000 | |||
1 | 8570 | 4950 | 3620 | 51380 |
2 | 8570 | 4624 | 3946 | 47434 |
3 | 8570 | 4269 | 4301 | 43133 |
4 | 8570 | 3882 | 4688 | 38445 |
5 | 8570 | 3460 | 5110 | 33335 |
6 | 8570 | 3000 | 5570 | 27766 |
7 | 8570 | 2499 | 6071 | 21694 |
8 | 8570 | 1952 | 6618 | 15077 |
9 | 8570 | 1357 | 7213 | 7864 |
10 | 8570 | 708 | 7862 | 2 |
Total | 85700 | 30702 | 54998 | |
Now, if refinanced at the start of Year 3, with the principal balance as 47434 |
47434=Pmt.*(1-1.045^-10)/0.045 |
5995 |
Revised payment schedule under refinancing will be | ||||
Year | Annuity | Tow.Int. | Tow.Princ. | Princ.Bal |
0 | 47434 | |||
1 | 5995 | 2135 | 3860 | 43574 |
2 | 5995 | 1961 | 4034 | 39539 |
3 | 5995 | 1779 | 4216 | 35324 |
4 | 5995 | 1590 | 4405 | 30918 |
5 | 5995 | 1391 | 4604 | 26314 |
6 | 5995 | 1184 | 4811 | 21504 |
7 | 5995 | 968 | 5027 | 16476 |
8 | 5995 | 741 | 5254 | 11223 |
9 | 5995 | 505 | 5490 | 5733 |
10 | 5995 | 258 | 5737 | -4 |
Total | 59950 | 12512 | 47438 |
Before refinancing |
Taxable interest after Itemized deduction of 2500 |
4269-2500= |
1769 |
After refinancing |
Taxable interest after Itemized deduction of 2500 |
0 |
(as the interest itself is 2135 only |
so, after -tax savings of interest expenses= |
(1769-0)*(1-25%)= |
1326.75 or |
1327 |