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Allowance for Credit Losses (Tables)
6 Months Ended
Jun. 30, 2021
Receivables [Abstract]  
Allowance for credit losses and recorded investments in loans Allowance for Credit Losses Metrics
 Allowance for Credit Losses
 Three Months Ended June 30, 2021
FFELP
Loans
Private Education
Loans
Credit CardsTotal
Allowance for Credit Losses
Beginning balance$4,318 $1,173,375 $1,328 $1,179,021 
Transfer from unfunded commitment liability(1)
— 24,556 — 24,556 
Provisions:
Provision for current period(2)1,014 182 1,194 
Loan sale reduction to provision— (1,477)— (1,477)
Total provisions(2)
(2)(463)182 (283)
Net charge-offs:
Charge-offs(54)(49,900)(74)(50,028)
Recoveries— 6,972 6,978 
Net charge-offs(54)(42,928)(68)(43,050)
Ending Balance$4,262 $1,154,540 $1,442 $1,160,244 
Allowance:
Ending balance: individually evaluated for impairment$— $80,495 $— $80,495 
Ending balance: collectively evaluated for impairment$4,262 $1,074,045 $1,442 $1,079,749 
Loans:
Ending balance: individually evaluated for impairment$— $1,192,743 $— $1,192,743 
Ending balance: collectively evaluated for impairment$716,958 $19,285,014 $12,784 $20,014,756 
Net charge-offs as a percentage of average loans in repayment (annualized)(3)
0.04 %1.16 %2.29 %
Allowance as a percentage of the ending total loan balance0.59 %5.64 %11.28 %
Allowance as a percentage of the ending loans in repayment(3)
0.78 %7.79 %11.28 %
Allowance coverage of net charge-offs (annualized)19.73 6.72 5.30 
Ending total loans, gross$716,958 $20,477,757 $12,784 
Average loans in repayment(3)
$546,306 $14,743,360 $11,855 
Ending loans in repayment(3)
$548,488 $14,825,375 $12,784 
____________
(1) See Note 6, “Unfunded Loan Commitments,” for a summary of the activity in the allowance for and balance of unfunded loan commitments, respectively.
(2) Below is a reconciliation of the provision for credit losses reported in the consolidated statements of income. When a new loan commitment is made, we record the CECL allowance as a liability for unfunded commitments by recording a provision for credit losses. When the loan is funded, we transfer that liability to the allowance for credit losses.
Consolidated Statements of Income
Provisions for Credit Losses Reconciliation
Three Months Ended 
 June 30, 2021
Private Education Loan provisions for credit losses:
Provisions for loan losses$(463)
Provisions for unfunded loan commitments69,960 
Total Private Education Loan provisions for credit losses69,497 
Other impacts to the provisions for credit losses:
FFELP Loans(2)
Credit Cards182 
Total180 
Provisions for credit losses reported in consolidated statements of income$69,677 

(3) Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period.
 Allowance for Credit Losses
 Three Months Ended June 30, 2020
FFELP 
Loans
Private Education
Loans
Personal
Loans
Credit CardsTotal
Allowance for Credit Losses
Beginning balance$4,296 $1,515,781 $152,673 $574 $1,673,324 
Transfer from unfunded commitment liability(1)
— 37,010 — — 37,010 
Provisions:
Provision for current period173 234,015 23,929 509 258,626 
Loan sale reduction to provision— — — — — 
Total provisions(2)
173 234,015 23,929 509 258,626 
Net charge-offs:
Charge-offs(84)(31,779)(14,601)(41)(46,505)
Recoveries— 5,532 1,336 — 6,868 
Net charge-offs(84)(26,247)(13,265)(41)(39,637)
Ending Balance$4,385 $1,760,559 $163,337 $1,042 $1,929,323 
Allowance:
Ending balance: individually evaluated for impairment$— $160,234 $— $— $160,234 
Ending balance: collectively evaluated for impairment$4,385 $1,600,325 $163,337 $1,042 $1,769,089 
Loans:
Ending balance: individually evaluated for impairment$— $1,520,240 $— $— $1,520,240 
Ending balance: collectively evaluated for impairment$754,340 $19,965,225 $772,086 $10,706 $21,502,357 
Net charge-offs as a percentage of average loans in repayment (annualized)(3)
0.07 %0.75 %6.87 %1.77 %
Allowance as a percentage of the ending total loan balance0.58 %8.19 %21.16 %9.73 %
Allowance as a percentage of the ending loans in repayment(3)
0.97 %12.13 %22.46 %9.73 %
Allowance coverage of net charge-offs (annualized)13.05 16.77 3.08 6.35 
Ending total loans, gross$754,340 $21,485,465 $772,086 $10,706 
Average loans in repayment(3)
$513,418 $14,011,841 $772,137 $9,265 
Ending loans in repayment(3)
$452,617 $14,512,723 $727,214 $10,706 
____________
(1) See Note 6, “Unfunded Loan Commitments,” for a summary of the activity in the allowance for and balance of unfunded loan commitments, respectively.
(2)Below is a reconciliation of the provisions for credit losses reported in the consolidated statements of income. When a new loan commitment is made, we record the CECL allowance as a liability for unfunded loan commitments by recording a provision for credit losses. When the loan is funded, we transfer that liability to the allowance for credit losses.
Consolidated Statements of Income
Provisions for Credit Losses Reconciliation
Three Months Ended 
 June 30, 2020
Private Education Loan provisions for credit losses:
Provisions for loan losses$234,015 
Provisions for unfunded loan commitments93,261 
Total Private Education Loan provisions for credit losses327,276 
Other impacts to the provisions for credit losses:
Personal Loans23,929 
FFELP Loans173 
Credit Cards509 
Total24,611 
Provisions for credit losses reported in consolidated statements of income$351,887 

(3) Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period.
 Allowance for Credit Losses
 Six Months Ended 
 June 30, 2021
FFELP
Loans
Private Education
Loans
Credit CardsTotal
Allowance for Credit Losses
Beginning balance$4,378 $1,355,844 $1,501 $1,361,723 
Transfer from unfunded commitment liability(1)
— 151,436 — 151,436 
Provisions:
Provision for current period27 (253,928)96 (253,805)
Loan sale reduction to provision— (10,335)— (10,335)
Loan transfer from held-for-sale— 1,887 — 1,887 
Total provisions(2)
27 (262,376)96 (262,253)
Net charge-offs:
Charge-offs(143)(105,039)(162)(105,344)
Recoveries— 14,675 14,682 
Net charge-offs(143)(90,364)(155)(90,662)
Ending Balance$4,262 $1,154,540 $1,442 $1,160,244 
Allowance:
Ending balance: individually evaluated for impairment$— $80,495 $— $80,495 
Ending balance: collectively evaluated for impairment$4,262 $1,074,045 $1,442 $1,079,749 
Loans:
Ending balance: individually evaluated for impairment$— $1,192,743 $— $1,192,743 
Ending balance: collectively evaluated for impairment$716,958 $19,285,014 $12,784 $20,014,756 
Net charge-offs as a percentage of average loans in repayment (annualized)(3)
0.05 %1.23 %2.59 %
Allowance as a percentage of the ending total loan balance0.59 %5.64 %11.28 %
Allowance as a percentage of the ending loans in repayment(3)
0.78 %7.79 %11.28 %
Allowance coverage of net charge-offs (annualized)14.90 6.39 4.65 
Ending total loans, gross$716,958 $20,477,757 $12,784 
Average loans in repayment(3)
$551,765 $14,738,505 $11,964 
Ending loans in repayment(3)
$548,488 $14,825,375 $12,784 
____________
(1) See Note 6, “Unfunded Loan Commitments,” for a summary of the activity in the allowance for and balance of unfunded loan commitments, respectively.
(2) Below is a reconciliation of the provision for credit losses reported in the consolidated statements of income. When a new loan commitment is made, we record the CECL allowance as a liability for unfunded commitments by recording a provision for credit losses. When the loan is funded, we transfer that liability to the allowance for credit losses.
Consolidated Statements of Income
Provisions for Credit Losses Reconciliation
Six Months Ended 
 June 30, 2021
Private Education Loan provisions for credit losses:
Provisions for loan losses$(262,376)
Provisions for unfunded loan commitments106,163 
Total Private Education Loan provisions for credit losses(156,213)
Other impacts to the provisions for credit losses:
FFELP Loans27 
Credit Cards96 
Total123 
Provisions for credit losses reported in consolidated statements of income$(156,090)

(3) Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period.
 Allowance for Credit Losses
 Six Months Ended 
 June 30, 2020
FFELP 
Loans
Private Education
Loans
Personal
Loans
Credit CardsTotal
Allowance for Credit Losses
Beginning balance$1,633 $374,300 $65,877 $102 $441,912 
Day 1 adjustment for the adoption of CECL2,852 1,060,830 79,183 188 1,143,053 
Balance at January 1, 20204,485 1,435,130 145,060 290 1,584,965 
Transfer from unfunded commitment liability(1)
— 179,085 — — 179,085 
Provisions:
Provision for current period210 377,877 49,247 800 428,134 
Loan sale reduction to provision— (161,793)— — (161,793)
Total provisions(2)
210 216,084 49,247 800 266,341 
Net charge-offs:
Charge-offs(310)(83,248)(33,848)(48)(117,454)
Recoveries— 13,508 2,878 — 16,386 
Net charge-offs(310)(69,740)(30,970)(48)(101,068)
Ending Balance$4,385 $1,760,559 $163,337 $1,042 $1,929,323 
Allowance:
Ending balance: individually evaluated for impairment$— $160,234 $— $— $160,234 
Ending balance: collectively evaluated for impairment$4,385 $1,600,325 $163,337 $1,042 $1,769,089 
Loans:
Ending balance: individually evaluated for impairment$— $1,520,240 $— $— $1,520,240 
Ending balance: collectively evaluated for impairment$754,340 $19,965,225 $772,086 $10,706 $21,502,357 
Net charge-offs as a percentage of average loans in repayment (annualized)(3)
0.11 %0.91 %7.13 %1.31 %
Allowance as a percentage of the ending total loan balance0.58 %8.19 %21.16 %9.73 %
Allowance as a percentage of the ending loans in repayment(3)
0.97 %12.13 %22.46 %9.73 %
Allowance coverage of net charge-offs (annualized)7.07 12.62 2.64 10.85 
Ending total loans, gross$754,340 $21,485,465 $772,086 $10,706 
Average loans in repayment(3)
$553,402 $15,306,349 $869,133 $7,326 
Ending loans in repayment(3)
$452,617 $14,512,723 $727,214 $10,706 
____________
(1) See Note 6, “Unfunded Loan Commitments,” for a summary of the activity in the allowance for and balance of unfunded loan commitments, respectively.
(2)Below is a reconciliation of the provisions for credit losses reported in the consolidated statements of income. When a new loan commitment is made, we record the CECL allowance as a liability for unfunded loan commitments by recording a provision for credit losses. When the loan is funded, we transfer that liability to the allowance for credit losses.
Consolidated Statements of Income
Provisions for Credit Losses Reconciliation
Six Months Ended 
 June 30, 2020
Private Education Loan provisions for credit losses:
Provisions for loan losses$216,084 
Provisions for unfunded loan commitments146,804 
Total Private Education Loan provisions for credit losses362,888 
Other impacts to the provisions for credit losses:
Personal Loans49,247 
FFELP Loans210 
Credit Cards800 
Total50,257 
Provisions for credit losses reported in consolidated statements of income$413,145 

(3) Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period.
The tables below summarize the activity in the allowance recorded to cover lifetime expected credit losses on the unfunded commitments, which is recorded in “Other Liabilities” on the consolidated balance sheets, as well as the activity in the unfunded commitments balance.
Three Months Ended June 30,
20212020
AllowanceUnfunded CommitmentsAllowanceUnfunded Commitments
Beginning Balance$19,367 $457,453 $29,707 $449,807 
Provision/New commitments - net(1)
48,203 1,235,604 72,111 1,165,224 
Other provision items21,757 — 21,150 — 
Transfer - funded loans(2)
(24,555)(531,361)(37,010)(495,989)
Ending Balance$64,772 $1,161,696 $85,958 $1,119,042 
Six Months Ended June 30,
20212020
AllowanceUnfunded CommitmentsAllowanceUnfunded Commitments
Beginning Balance$110,044 $1,673,018 $2,481 $1,910,603 
Day 1 adjustment for the adoption of CECL— — 115,758 — 
Balance at January 1110,044 1,673,018 118,239 1,910,603 
Provision/New commitments - net(1)
88,400 2,078,765 121,672 2,000,170 
Other provision items17,763 — 25,132 — 
Transfer - funded loans(2)
(151,435)(2,590,087)(179,085)(2,791,731)
Ending Balance$64,772 $1,161,696 $85,958 $1,119,042 
________________             
(1)     Net of expirations of commitments unused.
(2)     When a loan commitment is funded, its related liability for credit losses (which originally was recorded as a provision for unfunded commitments) is transferred to the allowance for credit losses.
Impaired financing receivables The following table provides the recorded investment, unpaid principal balance and related allowance for our TDR loans.
Recorded InvestmentUnpaid Principal BalanceAllowance
June 30, 2021
TDR Loans$1,230,794 $1,192,743 $80,495 
December 31, 2020
TDR Loans$1,312,805 $1,274,590 $104,265 
Average recorded investment and interest income recognized for troubled debt restructuring loans
Loans held for investment are summarized as follows:
June 30,December 31,
20212020
Private Education Loans:
Fixed-rate$9,442,904 $8,950,216 
Variable-rate11,034,853 10,779,121 
Total Private Education Loans, gross20,477,757 19,729,337 
Deferred origination costs and unamortized premium/(discount)65,872 63,475 
Allowance for credit losses(1,154,540)(1,355,844)
Total Private Education Loans, net19,389,089 18,436,968 
FFELP Loans716,958 737,593 
Deferred origination costs and unamortized premium/(discount)1,913 1,993 
Allowance for credit losses(4,262)(4,378)
Total FFELP Loans, net714,609 735,208 
Credit Cards (fixed-rate)12,784 12,238 
Deferred origination costs and unamortized premium/(discount)104 230 
Allowance for credit losses(1,442)(1,501)
Total Credit Cards, net11,446 10,967 
Loans held for investment, net$20,115,144 $19,183,143 
The average balance and the respective weighted average interest rates of loans in our portfolio are summarized as follows:
Three Months Ended
June 30,
20212020
Average BalanceWeighted Average Interest RateAverage BalanceWeighted Average Interest Rate
Private Education Loans$20,654,285 8.22 %$21,590,905 8.33 %
FFELP Loans723,391 3.41 761,469 3.82 
Personal Loans— — 836,342 12.54 
Credit Cards11,694 6.64 9,364 (9.34)
Total portfolio$21,389,370 $23,198,080 



Six Months Ended
June 30,
20212020
Average BalanceWeighted Average Interest RateAverage BalanceWeighted Average Interest Rate
Private Education Loans$20,818,476 8.22 %$22,546,874 8.60 %
FFELP Loans728,810 3.41 768,897 4.06 
Personal Loans— — 905,007 12.31 
Credit Cards11,767 3.71 7,325 (7.67)
Total portfolio$21,559,053 $24,228,103 
The following table provides the average recorded investment and interest income recognized for our TDR loans.

Three Months Ended 
 June 30,
20212020
Average
Recorded
Investment
Interest
Income
Recognized
Average
Recorded
Investment
Interest
Income
Recognized
TDR Loans$1,251,248 $21,490 $1,556,278 $24,071 
Six Months Ended 
 June 30,
20212020
Average
Recorded
Investment
Interest
Income
Recognized
Average
Recorded
Investment
Interest
Income
Recognized
TDR Loans$1,270,668 $42,979 $1,591,081 $50,559 
Age analysis of past due loans delinquencies
The following table provides information regarding the loan status and aging of TDR loans. For the periods presented below, we updated our delinquency bucket periods to conform with the delinquency bucket periods defined by the Federal Financial Institutions Examination Council (“FFIEC”).
 June 30,December 31,
 20212020
Balance%Balance%
TDR loans in in-school/grace/deferment(1)
$86,667 $88,750 
TDR loans in forbearance(2)
58,441 76,704 
TDR loans in repayment(3) and percentage of each status:
Loans current
959,797 91.6 %971,880 87.7 %
Loans delinquent 30-59 days(4)
38,500 3.7 59,249 5.3 
Loans delinquent 60-89 days(4)
26,365 2.5 43,576 3.9 
Loans 90 days or greater past due(4)
22,973 2.2 34,431 3.1 
Total TDR loans in repayment(3)
1,047,635 100.0 %1,109,136 100.0 %
Total TDR loans, gross$1,192,743 $1,274,590 
        _____
(1)Deferment includes customers who have returned to school or are engaged in other permitted educational activities and are not yet required to make payments on the loans (e.g., residency periods for medical students or a grace period for bar exam preparation).
(2)Loans for customers who have requested extension of grace period generally during employment transition or who have temporarily ceased making full payments due to hardship or other factors, consistent with established loan program servicing policies and procedures.
(3)Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period (but, for purposes of the table, do not include those loans while they are in forbearance).
(4)The period of delinquency is based on the number of days scheduled payments are contractually past due.
The following tables provide information regarding the loan status of our Private Education Loans, held for investment, by year of origination. Loans in repayment include loans on which borrowers are making interest only or fixed payments, as well as loans that have entered full principal and interest repayment status after any applicable grace period (but, for purposes of the following tables, do not include those loans while they are in forbearance). For the periods presented below, we updated our delinquency bucket periods to conform with the delinquency bucket periods defined by the FFIEC.
Private Education Loans Held for Investment Delinquencies by Origination Vintage
June 30, 2021
202120202019201820172016 and PriorTotal
Loans in-school/grace/deferment(1)(2)
$514,519 $1,727,389 $1,164,034 $641,600 $438,616 $713,049 $5,199,207 
Loans in forbearance(1)(3)
1,394 21,742 68,121 71,584 78,989 211,345 453,175 
Loans in repayment(1):
Loans current664,057 2,787,235 2,478,940 1,927,727 1,724,384 4,932,316 14,514,659 
Loans delinquent 30-59 days(4)
1,690 9,085 18,709 22,127 25,059 85,868 162,538 
Loans delinquent 60-89 days(4)
390 3,380 8,479 10,918 13,229 49,055 85,451 
Loans 90 days or greater past due(4)
176 1,052 4,524 7,920 10,180 38,875 62,727 
Total Private Education Loans in repayment666,313 2,800,752 2,510,652 1,968,692 1,772,852 5,106,114 14,825,375 
Total Private Education Loans, gross1,182,226 4,549,883 3,742,807 2,681,876 2,290,457 6,030,508 20,477,757 
Private Education Loans deferred origination costs and unamortized premium/(discount)10,603 18,946 12,100 7,405 5,693 11,125 65,872 
Total Private Education Loans1,192,829 4,568,829 3,754,907 2,689,281 2,296,150 6,041,633 20,543,629 
Private Education Loans allowance for losses(80,501)(253,285)(227,307)(155,165)(126,301)(311,981)(1,154,540)
Private Education Loans, net$1,112,328 $4,315,544 $3,527,600 $2,534,116 $2,169,849 $5,729,652 $19,389,089 
Percentage of Private Education Loans in repayment56.4 %61.6 %67.1 %73.4 %77.4 %84.7 %72.4 %
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment0.3 %0.5 %1.3 %2.1 %2.7 %3.4 %2.1 %
Loans in forbearance as a percentage of loans in repayment and forbearance0.2 %0.8 %2.6 %3.5 %4.3 %4.0 %3.0 %
_______
(1)For some students, going back to school in the fall was not an option because of the pandemic, or for other reasons. Therefore, some students are taking a “gap year” before returning to school. In 2020, for those students that had unexpectedly separated from school, we provided an extension of time through fall 2021 to re-enroll, before beginning their grace period that occurs prior to entering full principal and interest repayment status. At June 30, 2021, the loans in the “in-school/grace/deferment” category above include $249 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period. At June 30, 2021, the loans in the “in forbearance” category above include $23 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period. At June 30, 2021, the loans in the “in repayment” category above include $479 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period.
(2)Deferment includes customers who have returned to school or are engaged in other permitted educational activities and are not yet required to make payments on the loans (e.g., residency periods for medical students or a grace period for bar exam preparation).
(3)Loans for customers who have requested extension of grace period generally during employment transition or who have temporarily ceased making full payments due to hardship or other factors, consistent with established loan program servicing policies and procedures.
(4)The period of delinquency is based on the number of days scheduled payments are contractually past due.
Private Education Loans Held for Investment Delinquencies by Origination Vintage
December 31, 2020
202020192018201720162015 and PriorTotal
Loans in-school/grace/deferment(1)(2)
$1,374,085 $1,330,175 $733,824 $508,478 $327,763 $504,715 $4,779,040 
Loans in forbearance(1)(3)
16,159 92,677 110,319 118,946 109,073 198,302 645,476 
Loans in repayment(1):
Loans current2,043,033 2,573,228 2,045,012 1,850,539 1,685,572 3,701,564 13,898,948 
Loans delinquent 30-59 days(4)
6,400 16,983 26,934 30,771 33,040 91,400 205,528 
Loans delinquent 60-89 days(4)
2,628 9,143 15,026 18,121 19,064 55,661 119,643 
Loans 90 days or greater past due(4)
460 4,642 9,396 12,939 14,710 38,555 80,702 
Total Private Education Loans in repayment2,052,521 2,603,996 2,096,368 1,912,370 1,752,386 3,887,180 14,304,821 
Total Private Education Loans, gross3,442,765 4,026,848 2,940,511 2,539,794 2,189,222 4,590,197 19,729,337 
Private Education Loans deferred origination costs and unamortized premium/(discount)21,129 13,933 8,671 6,708 5,721 7,313 63,475 
Total Private Education Loans3,463,894 4,040,781 2,949,182 2,546,502 2,194,943 4,597,510 19,792,812 
Private Education Loans allowance for losses(210,875)(298,776)(218,136)(184,265)(150,150)(293,642)(1,355,844)
Private Education Loans, net$3,253,019 $3,742,005 $2,731,046 $2,362,237 $2,044,793 $4,303,868 $18,436,968 
Percentage of Private Education Loans in repayment59.6 %64.7 %71.3 %75.3 %80.0 %84.7 %72.5 %
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment0.5 %1.2 %2.4 %3.2 %3.8 %4.8 %2.8 %
Loans in forbearance as a percentage of loans in repayment and forbearance0.8 %3.4 %5.0 %5.9 %5.9 %4.9 %4.3 %

_______
(1)For some students, going back to school in the fall was not an option because of the pandemic, or for other reasons. Therefore, some students are taking a “gap year” before returning to school. In 2020, for those students that had unexpectedly separated from school, we provided an extension of time through fall 2021 to re-enroll, before beginning their grace period that occurs prior to entering full principal and interest repayment status. At December 31, 2020, the loans in the “in-school/grace/deferment” category above include $401 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period. At December 31, 2020, the loans in the “in forbearance” category above include $30 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period. At December 31, 2020, the loans in the “in repayment” category above include $609 million of Private Education Loans whose borrowers did not return to school in the fall of 2020 and who received such extension of time from us to re-enroll before beginning their grace period.
(2)Deferment includes customers who have returned to school or are engaged in other permitted educational activities and are not yet required to make payments on the loans (e.g., residency periods for medical students or a grace period for bar exam preparation).
(3)Loans for customers who have requested extension of grace period generally during employment transition or who have temporarily ceased making full payments due to hardship or other factors, consistent with established loan program servicing policies and procedures.
(4)The period of delinquency is based on the number of days scheduled payments are contractually past due.
Modified loans accounts for troubled debt restructuring
The following table provides the amount of modified loans (which include forbearance and reductions in interest rates) that became TDRs in the periods presented. Additionally, for the periods presented, the table summarizes charge-offs occurring in the TDR portfolio, as well as TDRs for which a payment default occurred in the relevant period presented and within 12 months of the loan first being designated as a TDR. We define payment default as 60 days past due for this disclosure.

Three Months Ended 
 June 30,
20212020
Modified Loans(1)
Charge-offsPayment-
Default
Modified Loans(1)
Charge-offsPayment-
Default
TDR Loans$1,917 $15,888 $1,560 $36,666 $8,623 $17,910 
Six Months Ended 
 June 30,
20212020
Modified Loans(1)
Charge-offsPayment-
Default
Modified Loans(1)
Charge-offsPayment-
Default
TDR Loans$5,634 $33,836 $7,746 $169,481 $27,998 $49,002 

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(1)Represents the principal balance of loans that have been modified during the period and resulted in a TDR.
Private education loan portfolio stratified by key credit quality indicators The following tables highlight the gross principal balance of our Private Education Loan portfolio, by year of origination, stratified by key credit quality indicators.
Private Education Loans Held for Investment - Credit Quality Indicators
June 30, 2021
Year of Origination
2021(1)
2020(1)
2019(1)
2018(1)
2017(1)
2016 and Prior(1)
Total(1)
% of Balance
Cosigners:
With cosigner$970,402 $3,931,236 $3,237,783 $2,340,257 $2,043,013 $5,496,367 $18,019,058 88 %
Without cosigner211,824 618,647 505,024 341,619 247,444 534,141 2,458,699 12 
Total$1,182,226 $4,549,883 $3,742,807 $2,681,876 $2,290,457 $6,030,508 $20,477,757 100 %
FICO at Origination(2):
Less than 670$72,850 $253,187 $280,455 $213,139 $183,920 $483,561 $1,487,112 %
670-699160,561 605,523 563,313 410,869 374,958 1,011,060 3,126,284 15 
700-749382,823 1,466,071 1,225,698 887,632 766,167 2,029,007 6,757,398 33 
Greater than or equal to 750565,992 2,225,102 1,673,341 1,170,236 965,412 2,506,880 9,106,963 45 
Total$1,182,226 $4,549,883 $3,742,807 $2,681,876 $2,290,457 $6,030,508 $20,477,757 100 %
FICO Refreshed(2)(3):
Less than 670$85,949 $274,820 $285,457 $254,743 $253,135 $832,185 $1,986,289 10 %
670-699155,903 520,662 426,727 294,368 246,577 659,428 2,303,665 11 
700-749386,736 1,431,445 1,154,717 787,467 656,960 1,652,346 6,069,671 30 
Greater than or equal to 750553,638 2,322,956 1,875,906 1,345,298 1,133,785 2,886,549 10,118,132 49 
Total$1,182,226 $4,549,883 $3,742,807 $2,681,876 $2,290,457 $6,030,508 $20,477,757 100 %
Seasoning(4):
1-12 payments$667,707 $2,362,092 $438,639 $393,882 $377,838 $667,673 $4,907,831 24 %
13-24 payments— 460,402 1,879,307 223,055 219,685 572,401 3,354,850 16 
25-36 payments— — 260,827 1,254,251 207,771 555,597 2,278,446 11 
37-48 payments— — — 169,088 933,712 553,180 1,655,980 
More than 48 payments— — — — 112,835 2,968,608 3,081,443 15 
Not yet in repayment514,519 1,727,389 1,164,034 641,600 438,616 713,049 5,199,207 26 
Total$1,182,226 $4,549,883 $3,742,807 $2,681,876 $2,290,457 $6,030,508 $20,477,757 100 %
2021 Current period(5) gross charge-offs
$(105)$(2,381)$(9,337)$(15,085)$(16,485)$(61,646)$(105,039)
2021 Current period(5) recoveries
— 124 850 1,722 2,109 9,870 14,675 
2021 Current period(5) net charge-offs
$(105)$(2,257)$(8,487)$(13,363)$(14,376)$(51,776)$(90,364)
Total accrued interest by origination vintage$23,950 $200,985 $312,566 $258,207 $197,977 $311,955 $1,305,640 
         ______
(1)Balance represents gross Private Education Loans.
(2)Represents the higher credit score of the cosigner or the borrower.
(3)Represents the FICO score updated as of the second-quarter 2021.
(4)Number of months in active repayment (whether interest only payment, fixed payment, or full principal and interest payment status) for which a scheduled payment was due.
(5)Current period refers to period from January 1, 2021 through June 30, 2021.
Private Education Loans Held for Investment - Credit Quality Indicators
December 31, 2020
Year of Origination
2020(1)
2019(1)
2018(1)
2017(1)
2016(1)
2015 and Prior(1)
Total(1)
% of Balance
Cosigners:
With cosigner$2,915,328 $3,467,219 $2,556,400 $2,262,635 $1,977,952 $4,198,748 $17,378,282 88 %
Without cosigner527,437 559,629 384,111 277,159 211,270 391,449 2,351,055 12 
Total$3,442,765 $4,026,848 $2,940,511 $2,539,794 $2,189,222 $4,590,197 $19,729,337 100 %
FICO at Origination(2):
Less than 670$195,214 $290,711 $225,276 $197,948 $162,413 $369,609 $1,441,171 %
670-699464,785 594,950 441,357 407,394 351,303 771,477 3,031,266 16 
700-7491,111,373 1,310,390 967,802 846,983 740,028 1,533,517 6,510,093 33 
Greater than or equal to 7501,671,393 1,830,797 1,306,076 1,087,469 935,478 1,915,594 8,746,807 44 
Total$3,442,765 $4,026,848 $2,940,511 $2,539,794 $2,189,222 $4,590,197 $19,729,337 100 %
FICO Refreshed(2)(3):
Less than 670$240,154 $331,229 $301,784 $298,195 $293,077 $734,599 $2,199,038 11 %
670-699438,665 493,135 336,966 283,906 231,759 504,779 2,289,210 12 
700-7491,102,666 1,248,806 871,677 734,222 603,160 1,220,468 5,780,999 29 
Greater than or equal to 7501,661,280 1,953,678 1,430,084 1,223,471 1,061,226 2,130,351 9,460,090 48 
Total$3,442,765 $4,026,848 $2,940,511 $2,539,794 $2,189,222 $4,590,197 $19,729,337 100 %
Seasoning(4):
1-12 payments$2,068,517 $600,038 $469,143 $472,258 $381,197 $507,343 $4,498,496 23 %
13-24 payments1632,096,635383,977223,332217,379425,3453,346,83117 
25-36 payments1,353,567370,250181,940439,3372,345,09412 
37-48 payments965,476351,433402,5521,719,461
More than 48 payments729,5102,310,9053,040,41515 
Not yet in repayment1,374,0851,330,175733,824508,478327,763504,7154,779,04024 
Total$3,442,765 $4,026,848 $2,940,511 $2,539,794 $2,189,222 $4,590,197 $19,729,337 100 %
2020 gross charge-offs(5)
$(1,087)$(10,940)$(27,000)$(35,851)$(36,416)$(94,032)$(205,326)
2020 recoveries(5)
42 636 2,274 3,585 4,284 13,200 24,021 
2020 net charge-offs(5)
$(1,045)$(10,304)$(24,726)$(32,266)$(32,132)$(80,832)$(181,305)
Total accrued interest by origination vintage$90,438 $265,688 $252,251 $209,178 $141,094 $210,247 $1,168,896 

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(1)Balance represents gross Private Education Loans.
(2)Represents the higher credit score of the cosigner or the borrower.
(3)Represents the FICO score updated as of the fourth-quarter 2020.
(4)Number of months in active repayment (whether interest only payment, fixed payment, or full principal and interest payment status) for which a scheduled payment was due.
(5)For period from January 1, 2020 through December 31, 2020.
Accrued interest receivable
The following table provides information regarding accrued interest receivable on our Private Education Loans. The table also discloses the amount of accrued interest on loans greater than 90 days past due as compared to our allowance for uncollectible interest on loans making full interest payments. The majority of the total accrued interest receivable represents accrued interest on deferred loans where no payments are due while the borrower is in school and fixed-pay loans where the borrower makes a $25 monthly payment that is smaller than the interest accruing on the loan in that month. The accrued interest on these loans will be capitalized to the balance of the loans when the borrower exits the grace period after separation from school. The allowance for this portion of interest is included in our loan loss reserve. The allowance for uncollectible interest exceeds the amount of accrued interest on our 90 days past due Private Education Loan portfolio for all periods presented.

 Private Education Loans
Accrued Interest Receivable
Total Interest Receivable90 Days and Greater Past DueAllowance for Uncollectible Interest
June 30, 2021$1,305,640 $3,469 $4,104 
December 31, 2020$1,168,895 $4,354 $4,467