Cash‑Out Refi vs HELOC: K Pull Saves /yr or Costs K

Imagine a homeowner with a $300,000 mortgage, 15% equity, and a $20,000 home‑improvement project on the horizon. The bank whispers “cash‑out refinance” while the app shows a “0% intro HELOC”; the decision feels like a gamble on interest rates, taxes, and hidden fees.

Can a cash‑out refinance really beat a HELOC on price?

A typical cash‑out refinance today locks a rate between 5.5% and 7% for a 30‑year term, converting a $280,000 balance into a $300,000 loan after the $20,000 pull. The resulting monthly principal‑and‑interest (P&I) payment hovers around $1,500, give or take a few dollars depending on the exact rate and rounding.

A HELOC, by contrast, usually starts at a variable 6% to 9% tied to the prime index, with interest‑only payments for the first 5‑10 years. On a $20,000 line, a 7% rate translates to roughly $117 of interest each month, but the balance can balloon if the borrower only makes the minimum payment.

The key distinction is that the refinance spreads the $20,000 across 30 years, while the HELOC keeps it confined to the draw period and then forces a balloon repayment or a refinance of the line itself.

How do amortization and monthly cash flow differ between the two?

In a refinance, each payment chips away at both principal and interest, meaning the $20,000 extra is gradually extinguished. After ten years, the amortization schedule shows roughly $12,000 of the pull already retired, reducing the equity gap and the future PMI bill.

HELOC interest‑only periods leave the principal untouched, so the $20,000 remains on the books until the draw period ends. When the repayment phase begins, the borrower may face a steep jump to $400‑plus monthly payments if the line is not paid down beforehand.

Because amortization smooths the debt over three decades, the total interest on a $20,000 cash‑out at 6.5% is close to $18,000, whereas a 7% variable HELOC that runs 10 years before amortization can easily exceed $22,000 in interest if the balance isn’t aggressively reduced.

What hidden costs turn a low‑rate offer into a money pit?

Lenders love to showcase “0.125% discount points” while slipping a $2,000 origination fee into the fine print. Those fees are typically added to the loan balance, inflating the financed amount and the interest charge for the life of the loan.

PMI is another silent accumulator. When the post‑refi loan‑to‑value (LTV) sits above 80%, insurers charge roughly 0.6% of the loan annually. On a $300,000 balance, that’s $1,800 per year, or about $54 per month, persisting until the LTV drops below the threshold—often a decade of payments.

HELOCs sometimes hide annual maintenance fees ranging from $50 to $200, plus transaction fees for each draw. Those costs are easy to overlook when the borrower focuses only on the headline interest rate.

When does pulling equity actually lower your total out‑of‑pocket expense?

If the homeowner can refinance at a rate at least 0.5% lower than the current mortgage and the closing costs stay under 2% of the loan amount, the cash‑out can shave $150‑$250 off the monthly bill after accounting for the $20,000 addition.

Conversely, using a HELOC to fund a project that can be paid off within the interest‑only window often beats a refinance when the borrower already enjoys a low primary mortgage rate. The math works out if the HELOC balance is cleared before the variable rate spikes, saving the homeowner roughly $1,200 in interest over five years compared to a higher‑cost refinance.

The break‑even point shifts dramatically when property taxes and homeowner’s insurance rise. Adding $150 of escrow for taxes on a $300,000 home plus $80 for insurance means the cash‑out’s higher P&I must be offset by a genuine rate advantage; otherwise the borrower pays more every month.

Practical steps to compare offers without getting burned

1. **Request a Good‑Faith Estimate (GFE) from every lender** and write down the advertised rate, origination fee, discount points, and any prepaid interest. 2. **Run an amortization calculator** for both the refinance and the HELOC, feeding in the exact fees and the anticipated draw schedule. Record the total interest over the first 5, 10, and 30 years. 3. **Add PMI projections** based on the new LTV; use the midpoint of the 0.5‑1% range to avoid optimistic lender assumptions. 4. **Factor in escrow changes** by estimating a 0.5% increase in property taxes and a 0.3% bump in insurance premiums after the pull; plug those numbers into the cash‑flow model. 5. **Compare the net present value** of each scenario using a 4% discount rate; the option with the lower NPV is the cheaper path in real terms.

Typical closing costs for a cash‑out sit between $3,000 and $6,000, while HELOC set‑up charges range from $500 to $1,500. If the borrower can negotiate the refinance fees down to the low end of that band, the cash‑out often wins; otherwise the HELOC’s lower upfront price may be more attractive.

Final checklist before you sign any paperwork

• Verify that the advertised rate is the **actual** rate after points and fees, not the “net APR” that lenders love to display.
• Confirm the exact PMI schedule and ask for a written payoff estimate at the 10‑year mark.
• Scrutinize the HELOC’s draw‑period length, required minimum payments, and the penalty for early repayment.
• Ensure all escrow amounts are itemized, not rolled into a vague “closing cost” line.
• Ask for a copy of the loan estimate with every number spelled out; any figure that appears in a bold font but not in the table deserves a second look.

By ticking each box, you turn the confusing marketing spiel into a transparent spreadsheet and keep the hidden costs from eroding your equity.