A personal loan creates an outside-creditor obligation; an eligible retirement-plan loan follows that plan’s terms and can have tax consequences if repayment rules are not met. A lower stated plan-loan rate alone does not settle the decision.
What must the plan administrator establish first?
Not every retirement plan offers loans. Ask the administrator for the governing loan policy, eligibility, fees, repayment method and what happens after a job change or missed payment. An IRA is not a 401(k) loan program. The IRS FAQ explains plan-loan rules and potential tax treatment; the actual facts and plan documents matter. Do not substitute a generic maximum or repayment period for your administrator’s written answer.
Which risks belong on the same comparison sheet?
| Issue | Personal loan | Eligible plan loan |
|---|---|---|
| Source of terms | Lender agreement | Plan documents and loan policy |
| Repayment failure | Contract and credit consequences | Plan default/distribution rules and possible tax consequences |
| Employment change | Ask about income/payment continuity | Ask whether payoff, offset or other treatment changes |
| Retirement exposure | Loan payment competes with savings | Borrowed assets and repayment path affect the retirement account |
Can you measure investment opportunity cost with one percentage?
No. As a deliberately limited benchmark,$10,000 left untouched at an assumed 6% annual compound return would become $13,382.26 after five years. That is not a forecast or the actual cost of a plan loan. It omits repayments, interest credited to the plan, market variation, contributions, fees and tax effects. Comparing that growth directly with loan interest would be an incomplete calculation.
What is a defensible decision process?
- Obtain both actual repayment schedules and all fees.
- Ask how repayment would continue during a job change or income disruption.
- Test household cash without assuming future investment returns.
- Review plan-specific tax questions with the administrator or an appropriate adviser before borrowing.
Sources supporting this explanation
Sources checked 2026-10-24. Examples are hypothetical BYL calculations or planning worksheets;they are not observed lender prices,offers or approval criteria.