The Strategic Questions When You Can Afford to Pay

Whether to take loans at all is the family decision before the loan-type decision. The honest answer when paying out of pocket is realistic:

When student loans make sense even if you can pay cash.

• The federal protections are valuable for a child entering an uncertain field. Death/disability discharge, IDR safety net, and PSLF optionality have positive expected value for any borrower who might end up in public service, in a low-income creative career, or in academia. Even a family that could pay sticker can rationally borrow modestly federal and pay it down quickly if the path turns out lucrative, while retaining the optionality if it does not.
• The interest cost is below your opportunity cost. If you would otherwise sell appreciated taxable assets at 23.8% federal LTCG+NIIT plus state tax to pay tuition, and a federal unsubsidized loan is at 6%, the loan is cheaper than the realization. Run the math against after-tax liquidation cost, not pre-tax sticker.
• The borrower has skin in the game. A modest loan in the student’s name ($5,000–$15,000 per year, federal subsidized or unsubsidized) creates psychological ownership of the education and a credit history. Parents who fully fund tuition sometimes layer this small loan deliberately for that reason and quietly pay it off after graduation.

The intra-family alternative. If the family has liquidity, an intra-family loan to the student at the Applicable Federal Rate (AFR) replaces the federal/private loan entirely. The mid-term AFR sets the minimum interest rate to avoid imputed-gift treatment; in a mid-3%–4% AFR environment this is well below any commercial student-loan rate. The family captures the interest income (taxable to the lending parent or grandparent) and the student pays below-market. Document the loan formally: written note, repayment schedule, interest actually paid, IRS Form 1098 reporting if interest exceeds the de minimis threshold. Done casually, the IRS will recharacterize as a gift; done properly, it is the cheapest student loan available.

The student loan interest deduction. The $2,500-per-year above-the-line deduction for student loan interest phases out completely above $95,000 MAGI single / $200,000 MFJ (approximate 2026 figures, indexed). Above those thresholds this deduction does not exist. Stop factoring it into the analysis.

The 529 loan repayment provision. The lifetime $10,000 per beneficiary that can be withdrawn from a 529 to pay down student loans (with an additional $10,000 per beneficiary sibling, also lifetime) is a clean way to drain residual 529 balances if the SECURE 2.0 529$\to$Roth rollover (section “College Funding Above the Aid Cutoff”) does not exhaust it. Time these distributions to the borrower’s lowest-income year for state-tax efficiency.

Refinancing. The decision tree:

• Federal loans, PSLF possible: do not refinance. Stay in the federal program.
• Federal loans, no PSLF, no IDR safety net needed, strong borrower credit, no death/ disability discharge concern: refinancing into a private 4%–5% loan can save real money over 10–20 years. The trade is irrevocable.
• Private loans: refinance opportunistically as rates fall and credit improves. The protections are equivalent; only the rate matters.

The 2026 private-refinance market prices a strong-credit borrower at SOFR-plus a spread, landing roughly at 4.5%–6% for 10-year fixed terms. Borrowers with a parent co-signer or joint income above $200,000 can sometimes do better; the floor depends on macro rates more than on the borrower’s individual profile.

The brutal takeaway: if you can pay, the student-loan decision is rarely about whether you can. It is about whether the legal and tax structure of the loan is more efficient than the alternative use of capital and whether the federal protections are worth keeping. Default to keeping them until you are certain you will not need them.