The average student loan borrower owes approximately $38,000. How fast you pay it off — and how much interest you pay — depends heavily on your repayment plan. Here’s a comprehensive breakdown.
Table of Contents
Standard Repayment (10-Year Plan)
Monthly payments and total interest under the standard plan:
Loan Balance
Interest Rate
Monthly Payment
Total Interest
Total Paid
$15,000
5.0%
$159
$4,090
$19,090
$20,000
5.0%
$212
$5,456
$25,456
$25,000
5.5%
$271
$7,559
$32,559
$30,000
5.5%
$326
$9,071
$39,071
$40,000
5.5%
$434
$12,095
$52,095
$50,000
6.0%
$555
$16,619
$66,619
$75,000
6.0%
$833
$24,929
$99,929
$100,000
6.5%
$1,135
$36,217
$136,217
$150,000
7.0%
$1,742
$59,004
$209,004
$200,000
7.0%
$2,322
$78,672
$278,672
Impact of Extra Payments
How extra monthly payments accelerate payoff on a $30,000 loan at 5.5%:
Extra Payment
Monthly Total
Payoff Time
Total Interest
Interest Saved
$0 (standard)
$326
10 years
$9,071
—
+$50
$376
8 years, 2 months
$7,230
$1,841
+$100
$426
7 years
$5,844
$3,227
+$200
$526
5 years, 5 months
$4,220
$4,851
+$300
$626
4 years, 7 months
$3,314
$5,757
+$500
$826
3 years, 4 months
$2,268
$6,803
An extra $100/month saves over $3,200 in interest and shaves 3 years off repayment.
Income-Driven Repayment Plans
Plan Comparison
Feature
SAVE
PAYE
IBR
ICR
Payment %
5% (undergrad) / 10% (grad)
10%
10-15%
20%
Income exemption
225% FPL
150% FPL
150% FPL
100% FPL
Forgiveness timeline
20 years (undergrad) / 25 years (grad)
20 years
20-25 years
25 years
Forgiveness taxable?
No (through 2025)
May be taxable
May be taxable
May be taxable
Interest subsidy
Yes (unpaid interest doesn’t capitalize)
Partial
Partial
No
Married filing separately
Uses only borrower income
Uses only borrower income
Uses only borrower income
Combined income
Monthly Payments Under SAVE Plan
5% of discretionary income for undergraduate loans (discretionary income = AGI - 225% of FPL):
Gross Salary
AGI (est.)
Discretionary Income
Monthly Payment (SAVE)
$30,000
$27,000
$3,775
$16
$35,000
$32,000
$8,775
$37
$40,000
$37,000
$13,775
$57
$45,000
$42,000
$18,775
$78
$50,000
$47,000
$23,775
$99
$60,000
$55,000
$31,775
$132
$75,000
$70,000
$46,775
$195
$100,000
$95,000
$71,775
$299
*Based on single filer with 225% FPL exemption of ~$23,225 for a single-person household in 2026.
SAVE vs Standard: Total Cost Comparison ($40,000 Loan at 6%)
Plan
Monthly Payment (Year 1)
Payoff Time
Total Paid
Forgiven?
Standard (10-year)
$444
10 years
$53,290
No
SAVE ($50K salary)
$99
20 years
~$29,000
~$30,000 forgiven
SAVE ($75K salary)
$195
20 years
~$52,000
~$8,000 forgiven
SAVE ($100K salary)
$299
~15 years
~$53,000
No (paid off before 20 years)
For borrowers earning under $60K, the SAVE plan often results in lower total cost due to forgiveness.
Loan Forgiveness Programs
Public Service Loan Forgiveness (PSLF)
Requirement
Detail
Qualifying employer
Government agency, non-profit (501(c)(3))
Qualifying payments
120 (10 years) on an IDR plan
Amount forgiven
Remaining balance (tax-free)
Qualifying loan type
Direct Loans only (consolidate FFEL if needed)
PSLF Savings Example ($80,000 in Loans)
Salary
IDR Monthly Payment
Payments Over 10 Years
Balance Forgiven
$45,000
$78
$9,360
~$85,000+
$55,000
$120
$14,400
~$78,000+
$65,000
$166
$19,920
~$72,000+
$80,000
$228
$27,360
~$60,000+
PSLF is the most valuable forgiveness program — potentially worth $60,000-100,000+.
Teacher Loan Forgiveness
Qualification
Forgiveness Amount
5 years teaching at qualifying low-income school
Up to $17,500
Math/science/special education teachers
$17,500
Other qualifying teachers
$5,000
Repayment Strategies
Debt Avalanche (Highest Interest First)
Loan
Balance
Rate
Minimum
Priority
Private loan
$15,000
8.5%
$180
Pay first
Grad PLUS
$25,000
7.0%
$290
Second
Undergrad (unsub)
$15,000
5.5%
$163
Third
Undergrad (sub)
$10,000
4.5%
$104
Last
Debt Snowball (Smallest Balance First)
Loan
Balance
Rate
Minimum
Priority
Undergrad (sub)
$10,000
4.5%
$104
Pay first
Undergrad (unsub)
$15,000
5.5%
$163
Second
Private loan
$15,000
8.5%
$180
Third
Grad PLUS
$25,000
7.0%
$290
Last
The avalanche method saves the most money; the snowball method provides faster psychological wins.
Refinancing Student Loans
Factor
Federal Loans
Refinanced (Private)
Typical rate (good credit)
5.0-7.0% (fixed)
4.0-6.0% (variable/fixed)
IDR plans available
Yes
No
PSLF eligible
Yes
No
Forbearance/deferment
Yes
Limited
Interest deduction
Up to $2,500/year
Up to $2,500/year
When to Refinance
Situation
Refinance?
Private loans at high interest
Yes — no federal benefits to lose
Federal loans + PSLF-eligible job
No — you’d lose PSLF and IDR
Federal loans + high salary + no forgiveness plans