Yes, you can borrow against your own money, and lenders routinely let you pledge a savings account, a certificate of deposit, a taxable brokerage portfolio, a 401(k) balance, or the cash value of a permanent life insurance policy. Each one carries its own borrowing limit, interest rate, and default consequence. One major category of personal savings sits outside this list entirely: an Individual Retirement Account cannot legally be used as collateral, and treating it as such triggers tax consequences severe enough to wipe out the account.
Savings Accounts and CDs
Cash deposits are the easiest asset to borrow against. Banks and credit unions offer loans secured by savings accounts or CDs, and because the collateral sits in their own vault, approval is quick and the rate is low. You can typically borrow up to 90% or even 100% of the account balance. Rates usually run a few percentage points above what the deposit itself earns, so a CD paying 4% supports a loan at roughly 6% to 7%.
The lender places a hold on the pledged funds, which freezes them until you pay down the loan. Some institutions release the frozen cash in proportion to your payments. If you stop paying, the bank takes the money straight from the account. That near-zero risk is why rates stay low and why credit checks are often minimal or waived.
This works best for short-term liquidity when breaking a CD early would cost accrued interest, or when your credit score would push you toward a more expensive unsecured product. The limitation is obvious: you are tying up money you already have.
Brokerage Accounts
If your money is in a taxable brokerage account holding stocks, bonds, or mutual funds, you can borrow against it two ways. A margin loan is used to buy more securities. A non-purpose loan is used for anything except buying securities. Both pledge the portfolio as collateral.
How Much You Can Borrow
Federal Reserve Regulation T sets the initial margin requirement at 50% of the current market value for most equity securities, so you can borrow up to half the portfolio’s value when the loan is made.1eCFR. 12 CFR Part 221 – Credit by Banks and Persons Other Than Brokers or Dealers for the Purpose of Purchasing or Carrying Margin Stock (Regulation U) After that, FINRA Rule 4210 requires a maintenance margin of at least 25% of market value for margin-eligible securities.2FINRA.org. 4210. Margin Requirements Many brokerage firms impose house requirements above that 25% floor, often 30% to 40%. Check your broker’s specific policy.
Non-purpose loans secured by a brokerage portfolio work similarly, but the proceeds cannot be used to buy more securities. The lender must disclose whether a loan qualifies as non-purpose under Regulation U.
The Margin Call Problem
This is where securities-based borrowing turns dangerous. If your portfolio drops and your equity falls below the maintenance requirement, the lender issues a margin call demanding more cash or securities. Your broker is not required to contact you before liquidating holdings to meet that call.3FINRA.org. 2264. Margin Disclosure Statement Most firms try to reach you, but they have no legal obligation to wait. They can sell your positions immediately, in any order they choose, at whatever price the market offers. In a falling market, that forced sale locks in losses at the worst possible moment.
Margin interest rates fluctuate with prevailing rates and loan size. Large balances often qualify for lower rates. Smaller loans may run several points above the broker call rate. Margin debt has no set repayment schedule, so you can carry it indefinitely as long as you maintain the required equity, which sounds flexible until a sudden drop forces repayment on someone else’s timeline.
401(k) and Employer Retirement Plans
Borrowing from a 401(k) is unusual because you are lending to yourself. The plan distributes funds to you, you pay interest back into your own account, and if everything goes to plan no taxes are owed. The rules are strict and the penalties for breaking them are steep.
Borrowing Limits
Federal law caps 401(k) loans at the lesser of $50,000 or 50% of your vested account balance.4Office of the Law Revision Counsel. 26 USC 72(p) – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts A $10,000 floor applies, so if 50% of your vested balance is less than $10,000, you can still borrow up to $10,000, provided the plan allows it. The $50,000 ceiling is reduced by the highest outstanding loan balance you carried during the prior 12 months, which prevents repeated pay-down-and-re-borrow cycles.
Not every employer plan offers loans. The plan document controls whether loans are permitted, what purposes qualify, and what fees apply. When they are offered, interest is typically set at prime plus 1%, and that interest flows into your own retirement balance instead of to a bank.
Repayment
The loan must be repaid within five years through substantially level payments made at least quarterly, which usually means automatic payroll deductions.5Internal Revenue Service. Retirement Topics – Plan Loans A loan used to buy a primary residence can be stretched beyond five years, with the specific maximum depending on the plan.4Office of the Law Revision Counsel. 26 USC 72(p) – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
What Happens if You Leave the Job
The biggest risk is not the interest rate or the borrowing limit. It is what happens if you leave the employer, voluntarily or not. When you separate, the plan can demand full repayment of the outstanding balance. If you cannot repay by the due date of your federal tax return (including extensions) for the year you left, the remaining balance is treated as a taxable distribution.5Internal Revenue Service. Retirement Topics – Plan Loans You owe income tax on the unpaid amount, plus a 10% early withdrawal penalty if you are under 59½.6eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions A $30,000 unpaid balance could easily cost $10,000 or more in combined taxes and penalties.
The same deemed-distribution treatment applies if you simply stop making payments while still employed. Miss enough payments and the plan reports the balance as a distribution, with the same tax hit.
Why You Cannot Pledge an IRA
Many people assume that because 401(k) loans exist, a traditional or Roth IRA works the same way. It does not. Federal law treats any portion of an IRA used as security for a loan as a distribution the moment you pledge it.7Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts
The damage goes beyond the pledged amount. The IRS considers using an IRA as collateral a prohibited transaction, and engaging in one causes the entire account to lose its tax-advantaged status as of the first day of that year.8Internal Revenue Service. Retirement Topics – Prohibited Transactions The full account balance then counts as a taxable distribution at once. For a six-figure IRA, a single collateral pledge can produce a tax bill of $30,000 or more plus early withdrawal penalties. No lender who understands the law will accept an IRA as collateral, but a predatory lender or an uninformed borrower can still create this disaster.
Life Insurance Cash Value
Permanent life insurance policies, including whole life and universal life, build cash value as a portion of each premium accumulates and earns interest. Once enough cash value exists, you can borrow against it directly from the insurance company. No credit check, no formal application, no required repayment schedule. The death benefit guarantees the insurer, so approval is essentially automatic.
Policy loan interest rates are typically fixed in the contract, often in the range of 5% to 8%. You can repay on any schedule, or not at all during your lifetime. If you die with the loan outstanding, the insurer deducts the balance plus accrued interest from the death benefit paid to your beneficiaries.9Internal Revenue Service. Life Insurance and Disability Insurance Proceeds
The Lapse Tax Bomb
The real danger is not dying with a balance. It is letting the loan grow until accrued interest eats through the remaining cash value and the policy lapses. The IRS then treats the lapse as a surrender, and the taxable gain is calculated on the full cash value before the loan payoff, not on what you have left in your hands. You can owe taxes on money you never received. The gain equals the policy’s cash value minus total premiums paid, and it is taxed as ordinary income. For a policy that has been in force for decades, this can produce an unexpected five-figure tax bill.
Monitor the loan-to-value ratio on any policy loan. Most insurers send warnings as the balance approaches the tipping point, but by then your options may narrow to making a large payment or accepting the lapse and the tax that follows.
Taxes on Interest and Defaults
Interest on most personal loans secured by your own assets is not tax-deductible. The IRS classifies it as personal interest, which lost its deductibility in 1986. Two notable exceptions: mortgage interest on a primary or secondary residence (deductible on up to $750,000 of debt for homes acquired after December 15, 2017), and, for tax years 2025 through 2028, up to $10,000 in annual interest on a qualifying vehicle loan for a car assembled in the United States.10Internal Revenue Service. Topic No. 505, Interest Expense
Interest on a 401(k) loan is paid to your own account, so there is no deduction and no outside cost. The hidden expense is opportunity cost: borrowed money is no longer invested, so a strong market during the loan term produces gains you miss permanently.
If any of these arrangements defaults, the tax consequence depends on the asset. A 401(k) default triggers income tax plus a potential 10% penalty. A life insurance lapse triggers ordinary income tax on the gain. A margin call liquidation triggers capital gains tax on any appreciation in the sold securities. None of these are deferrable once they happen.
What Default Looks Like
The feature that makes a collateral loan easy to get is the same feature that makes default painful. A bank freezes and deducts from your deposit. A broker sells your securities, potentially without warning. A plan administrator reports the unpaid 401(k) balance as a distribution. An insurer lets the policy lapse. In every case, you lose the asset you pledged and often owe taxes on top of it. Choose the asset, and the risk, with that in mind.