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Wealth Builder HELOC — Lendia California

How Is the Wealth Builder HELOC Rate Determined? (30-Day SOFR Explained)

The Wealth Builder HELOC is a variable-rate product. Your interest rate is calculated as the 30-day SOFR index plus a lender margin. Understanding both components helps you evaluate the rate and anticipate how it may change over time.

What Is SOFR?

SOFR stands for Secured Overnight Financing Rate. It is a benchmark interest rate published daily by the Federal Reserve Bank of New York, based on overnight transactions in the U.S. Treasury repurchase market. SOFR replaced LIBOR as the primary benchmark for adjustable-rate financial products in the United States.

The 30-day average SOFR is a smoothed version of the daily rate, calculated as a compounded average over the prior 30 days. This makes it slightly more stable than the overnight rate and is the specific index used by the Wealth Builder HELOC.

What Is the Margin?

The margin is the fixed spread added to SOFR to determine your note rate. For the Wealth Builder HELOC, margins typically range from approximately 2.50% to 4.00% depending on FICO, LTV, occupancy, and loan amount. The margin is set at origination and does not change for the life of the loan.

How the Rate Is Calculated

Your rate on any given day = 30-day average SOFR + your margin. In an illustrative example, if SOFR were 4.30% and your margin were 2.95%, your rate would be 7.25%. As SOFR rises or falls, your rate adjusts accordingly — typically on a monthly basis.

Rate Caps

The Wealth Builder HELOC includes periodic and lifetime rate caps to limit how much your rate can increase. Review the program disclosures with your Lendia advisor for the specific cap structure on your loan.

Note Rate Formula30-Day Average SOFR + Margin = Your Interest Rate. The SOFR value changes over time, so the current figure is confirmed when we review your scenario. Margins typically run 2.50%–4.00% depending on your profile.

Seeing the rate formula in action (illustrative example, not a quote)

The rate is the index plus your margin. The margin range on this page is about 2.50% to 4.00%. If the index were a hypothetical 4.00%, the same arithmetic gives:

With a 2.50% margin: 4.00% + 2.50% = 6.50%
With a 4.00% margin: 4.00% + 4.00% = 8.00%

Those are not predictions or offers. They show that the margin you are assigned by credit, LTV, occupancy and loan amount can matter as much as where the index sits.

Turn percentage points into dollars

Interest on a balance moves with the rate, so a simple stress test is balance × rate change ÷ 12:

$300,000 × 1% ÷ 12 = $250 a month
$300,000 × 2% ÷ 12 = $500 a month

If you could not comfortably absorb the second figure on top of your existing budget, ask whether a smaller balance or a fixed-rate alternative is better for you.

What to confirm in writing

How often the rate adjusts and which date the index is read.
The periodic cap and the lifetime cap for your loan.
Any floor on the rate.
Whether the margin can change if your occupancy or loan amount changes at closing.

Index changes in practice

Index moves feed through on the adjustment schedule in your note, so a change in the market does not hit your payment on the same day. Between adjustments, your daily interest still accrues on the balance. If you keep a running spreadsheet of balance, rate and interest charged, you will see how a falling balance partly offsets an index increase. That is the practical reason many borrowers watch the balance as closely as the rate.

Frequently asked questions

Where can I see the current index value?

The Federal Reserve Bank of New York publishes SOFR data. The program disclosures show how the index is applied to your loan, and we can walk through them with you.

Will paying the balance down reduce my rate?

Not the rate itself, since the margin is fixed. It reduces the dollars of interest charged at that rate.

How is this different from a fixed-rate mortgage?

A fixed rate removes index risk but not the cost of that certainty. The line gives flexibility and exposure to rate movement, and neither is better in every situation.

Related guides

Quick recap

Every 1 percentage point change in the index adds or subtracts about $250 a month in interest on a $300,000 balance.
Margin is fixed at origination; only the index moves.
Ask for the periodic and lifetime cap details in writing before you commit.