Considering Three Different Ways to Borrow: HELOCs, SBLOCs, and 401(k) Plan Loans

For an immediate spending need, you don’t always have to immediately sell investments - it can be advantageous to avoid the capital gains tax hit if the cashflow need is more temporary. Three common options for higher‑net‑worth households are:

• Home Equity Line of Credit (HELOC)

• Securities‑Backed Line of Credit (SBLOC)

• 401(k) loan

They all are viable options worth considering but they leverage different assets and carry different risks.

HELOC: Borrowing Against Your Home

A HELOC is a revolving line of credit secured by the equity in your real estate assets.

Pros

• Uses home equity, not investments or retirement accounts.

• Flexible access: you can draw, repay, and redraw only during the “draw period.”

• Typically lower rates than unsecured personal loans or credit cards.

  
  

Cons

• Your home is technically "at-risk" the same as with any mortgage.

• The "draw" period has a finite length of time, usually ten years. After this, you will no longer be able to draw against the credit line.

• Rates are usually variable, so your payment can increase if interest rates rise.

• Closing costs and appraisal fees apply

• Approval and funding can be slower than tapping an existing SBLOC or 401(k) loan.

  
  

When a HELOC can make sense

• You’re funding home improvements that likely add value.

• You have strong, stable cash flow to comfortably handle a variable payment.

• You prefer not to access investments or retirement accounts.

SBLOC: Borrowing Against Your Investments

A Securities‑Backed Line of Credit (SBLOC) is a revolving credit line secured by a taxable investment account. Your portfolio stays invested, but you borrow against a percentage of its value.

Pros

• No need to sell investments, so you may avoid realizing capital gains.

• Typically fast to set up, especially if your advisor or custodian already offers it.

• Flexible: you can draw, repay, and draw again within your approved limit.

• May allow for interest‑only payments.

Cons

• Market risk is the big one: if markets drop, your collateral shrinks.

• A significant decline can trigger a margin call: you may be forced to deposit funds, add securities, or the lender can sell your investments.

• Rates are usually variable and can reset higher.

  
  

When an SBLOC can make sense

• Short‑term, bridge‑style needs: e.g., cash for a home purchase before a sale, or temporary liquidity for a business need.

• You have a well‑diversified portfolio and can comfortably handle potential margin calls or a quick payoff.

• You’re trying to avoid realizing a large, one‑time capital gain this year, and you have a clear repayment plan.

401(k) Loan: Borrowing From Your Future Self

A 401(k) loan may let you borrow from your own retirement plan, typically up to the lesser of a percentage of your balance and a dollar cap set by law and plan rules. Not all plans allow for loans so you will need to check on that.

Pros

• No credit check; your eligibility is based on plan rules, not your credit score

• Interest you pay goes back to your own 401(k) account - paying interest back to yourself rather than a lender is somewhat unique and can be attractive.

• Payments are usually handled via payroll deduction, making repayment automatic.

• For many people, it’s the only available borrowing option when credit is tight.

Cons

• You’re removing money from the market, so you can miss out on potential investment growth while the loan is outstanding.

• If you leave your job (voluntarily or not), the outstanding loan may come due quickly; whatever you can’t repay usually becomes a taxable distribution and may face penalties if you’re under the required age. This depends on the terms of the 401k plan on participants taking a loan.

• Loan payments are made with after‑tax dollars, and distributions in retirement are taxed again, which can be inefficient.

When a 401(k) loan can make sense

• Last‑resort or “needs‑based” situations, not for discretionary spending.

• Short‑term borrowing where you are highly confident in job stability and repayment.

• When the alternative is high‑interest debt (e.g., credit cards) and you’ve considered the impact on retirement.

How to Think About “Which Is Better?”

Rather than asking which product is “best,” it’s more helpful to ask three questions:

What’s the real purpose and time frame?

• Short‑term, clearly defined need (e.g., bridge to a known liquidity event) often favors an SBLOC.

• Long‑term home improvement may fit a HELOC better

• 401(k) loans tend to be “emergency” tools, not planning tools.

How stable is your cash flow and job situation?

• Variable‑rate products (HELOC, SBLOC) can become more expensive if rates rise.

• A 401(k) loan becomes risky if there’s a real chance you may change jobs or face layoffs.

How a Firm Like Mine Can Help

Because the options are complex and carry different considerations, weighing the options and how they affect your specific household scenario is critical.

At my firm in Arvada, Colorado, I work as a fee‑only financial planner on an hourly and one‑time planning basis—I don’t manage investments for an asset‑based fee and I don’t earn commissions.

Instead of being sold a product, you get a detailed, written plan that walks through your options and shows how each choice affects you individually.