Finology Software

NEW

OBBB-compliant, Repayment Assistance Plan (RAP) is live in the simulator

Worked example

A payoff plan cannot see forgiveness.

Snowball and avalanche are good arithmetic. They answer one question well: given a set of balances and rates, which do you attack first. For a federal student loan borrower on an income driven plan, that is not the question that decides the outcome, and the gap is large enough to be worth showing rather than asserting.

Every figure below is computed live by the Finology engine, parity verified, and independently checkable at the verify URL at the bottom of this page.

The borrower

One real scenario, stated in full.

This is a published reference scenario, served from our public API so it cannot quietly drift from what the engine actually does.

Adjusted gross income$68,000
Filing statusHead of household
Dependents2
StateIdaho
Loan A$89,400 at 5.60%
Loan B$18,800 at 4.45%
Total balance$108,200
Qualifying PSLF payments made60 of 120

A payoff strategy reads this as two debts. Avalanche attacks the 5.60% loan first. Snowball attacks the $18,800 loan first. Both answers are internally correct, and for this borrower neither one changes the outcome, because both loans reach forgiveness together at the same month.

What the engine returns

Three paths, same borrower, same day.

Computed 30 September 2026 under rule version rl1-ff59950a0f31bf1b.

Repayment Assistance

$240 / mo

Forgiveness reached in 60 months

Total out of pocket$14,400
Forgiven$104,777
Tax on forgiveness$0

Income Based · lowest cost

$225 / mo

Forgiveness reached in 60 months

Total out of pocket$13,510
Forgiven$123,359
Tax on forgiveness$0

Standard · retire the debt

$2,062 / mo

Balance cleared in 60 months

Total out of pocket$123,710
Forgiven$0
Tax on forgiveness$0

$110,200

The distance between the lowest cost path and retiring the balance, for this borrower, over the same five years. A payoff plan has no field in which this number can appear, because nothing in a balance and a rate expresses the fact that the remaining balance is canceled at month 60.

Why the frame misses it

Three things a balance and a rate cannot express.

The payment is set by income

On an income driven plan the monthly payment comes from adjusted gross income, family size and filing status. Paying extra does not lower it, and does not move the forgiveness date closer.

Extra dollars buy back forgiveness

Every additional dollar of principal reduces a balance that was going to be canceled. The borrower pays it in order to not have it forgiven, which is the opposite of the intent behind the payment.

The rate stops driving the answer

Avalanche ranks the 5.60% loan above the 4.45% loan. Both are forgiven in the same month, so the ranking has no effect on what this borrower pays.

What we are not claiming. We are not saying a general purpose assistant returns $123,710. It returns a payoff schedule, and a payoff schedule is a reasonable answer to the question it was asked. The claim is narrower and easier to check: the debt elimination frame has no representation for forgiveness, so the action it recommends moves this borrower along the axis whose far end the engine prices at $123,710. The frame cannot price that move. The engine can.

Provenance

Check this yourself.

Every answer the engine produces is recorded with an identifier and can be re-read later by anyone, with no key and no account.

Answer ID
44d06723-5ed3-4d71-b260-501534fc4748
Verify URL
api.finology.tech/v1/verify/44d06723-5ed3-4d71-b260-501534fc4748
Rule version rl1-ff59950a0f31bf1b, computed 2026-09-13.
Primary sources behind these figures

  • One Big Beautiful Bill Act, Pub. L. 119-21 § 82001 (4 July 2025), amending Higher Education Act § 455. Last verified 2026-09-01.
  • 34 CFR 685.209, IBR forgiveness term. Last verified 2026-07-09.
  • 34 CFR 685.208(b), remaining term after prior months in repayment.
  • HHS Annual Update of the Poverty Guidelines, 91 FR (15 January 2026), FR Doc. 2026-00755. Last verified 2026-06-13.
Disclosed omission
These projections apply each loan’s stated rate with no auto pay reduction. Borrowers on auto pay receive 0.25 points from their servicer, and 1.00 point in total from 2026-07-01 through 2028-06-30 if enrolled by 2026-09-30 on Direct Loans originated after 2012-07-01. Interest, total paid and any forgiven balance are therefore overstated for those borrowers. We publish this rather than let it sit behind the number.

Finology Software builds the student loan engine financial advisors use to load a book of borrowers, keep it current as the rules move, and produce a client ready report with every figure cited and dated.