Working preview built for The Ziggy Team · every number below is calculating live — run the simulator and try both outcomes
Free · 60 seconds · no credit pull

See how many years a HELOC could cut off your mortgage.

Most homeowners are told there are only two options: pay the minimum for 30 years, or refinance. There is a third. This simulator runs your real numbers side by side so you can see the difference in dollars, not theory.

  • Your exact interest savings and payoff date, calculated live
  • An honest yes or no — this strategy does not fit everyone
  • Your full breakdown sent to you as a spreadsheet

No account, no credit check, and nothing is submitted until you choose to.

First-Position HELOC — how the strategy actually works
3 min · Will Szilagyi, Senior Loan Officer
Luminate Bank · NMLS 1281698 Will Szilagyi · NMLS 1792018 Equal Housing Lender Your numbers are never shared or sold
The strategy in 60 seconds

Why the same paycheck pays off a mortgage years faster

Nothing here is exotic. It is the difference between money sitting still in a checking account and money working against a balance every single day.

1

Your income stops sitting idle

Instead of parking your paycheck in a checking account earning nothing, it lands against a line of credit. Interest is charged on the average daily balance, so every day your money sits there, it is working.

2

Your surplus attacks principal

Whatever is left after your bills gets applied straight to principal in chunks, not spread thin across a 30-year amortization schedule where the bank front-loads the interest.

3

The compounding flips direction

Each chunk lowers the balance the next month's interest is calculated on. The effect builds on itself — which is exactly what the simulator below is measuring.

The simulator

Run your real numbers

Everything updates as you type. Nothing is submitted anywhere until you decide to send it.

Your situation

Estimates are fine
Your home
$
$
Equity available$100,000 (20%)
%
Your current payment (principal & interest)$2,718
Your monthly cash flow
$
$
$
Monthly surplus to work with $3,632
The line of credit
%
Estimated interest you would not pay
$412,398
Mortgage gone 21 yr 3 mo sooner
Paid off in
6 yr 9 mo
instead of 28 yr
Total interest — now
$513,394
on your current plan
Total interest — accelerated
$100,996
using your surplus
Your mortgage as it stands With the strategy
Mortgage balance over time, current plan versus accelerated plan
 As it standsWith the strategy
Years to payoff 28 yr 0 mo6 yr 9 mo
Total interest paid $513,394$100,996
Total cost of the house $913,394$500,996
Interest you keep $412,398
How these numbers are calculated

Your current plan is a standard amortization of the balance you entered at your current rate over the years remaining. The accelerated plan applies your monthly surplus against principal each month through the line of credit, and charges interest on the line at the rate you entered against its average balance. Rates are assumed to hold steady, and the model does not include closing costs, taxes, or the effect of any extra payment you already make. This is an estimate to show you the shape of the opportunity, not a loan offer or a commitment to lend.

Good fit

Your cash flow supports this strategy.

With $3,632 a month of surplus, you have the engine this strategy runs on. The next step is confirming your actual HELOC options and building the schedule around your real bills.

Your breakdown is on the way.

Check your inbox in the next minute for your spreadsheet and a link to book your review call.

The honest version

Who this works for, and who it does not

Anyone who tells you this strategy works for every homeowner is selling you something. Here is the real filter.

It works when

  • You run a real monthly surplus. Income comfortably exceeds your bills, month after month, not just in a good month.
  • You have equity to borrow against. Generally 15–20% or more, with credit that qualifies you for a competitive line.
  • You are disciplined with a line of credit. The line is a tool, not a spending account. That distinction is the whole strategy.
  • You are staying in the home. The math needs a few years to compound in your favor.

Think twice when

  • Your surplus is thin or unpredictable. Without consistent surplus there is nothing driving the balance down, and you have added a variable-rate debt for no gain.
  • You carry revolving balances now. If credit cards already run a balance month to month, a bigger line usually makes that worse, not better.
  • Your mortgage rate is already very low. Sitting on a 3% fixed note changes the math, and often the answer is simply to make extra principal payments instead.
  • You may sell or move soon. Short horizons rarely give the strategy time to pay for itself.
Questions

The things people ask before they book

Is this the same thing as just paying extra on my mortgage?

It is a cousin of it, and for some people paying extra principal really is the right answer. The difference is that a line of credit charges interest on the average daily balance, so parking your income there does work for you between paydays, and it keeps your surplus accessible instead of locked into the house. The simulator above shows you what your surplus alone is worth, which is the honest floor of the strategy.

Does running this affect my credit?

No. Nothing on this page pulls credit or submits an application. Credit is only reviewed if and when you decide to move forward on an actual line of credit, and we will tell you before that happens.

What if my income is not the same every month?

Self-employed and commission-based income is common in this strategy and is not a disqualifier. Use a conservative monthly average in the simulator, then we will build the schedule around your real pattern including the slow months.

What happens after I submit my numbers?

You get your full breakdown as a spreadsheet you can keep, and a link to book a review. On that call we confirm your actual HELOC options, stress-test the plan against a rate move, and give you a straight answer on whether to proceed.

What does this cost me?

The simulator, the spreadsheet, and the review call cost nothing. If you move forward on a line of credit, you are told every cost in writing before anything is signed.

Your numbers are the only ones that matter.

Sixty seconds to see whether the strategy is worth a real conversation, or whether you are better off leaving your mortgage exactly where it is.