Cash-Out Refinance Calculator

What this calculator is, and when to reach for it

A cash-out refinance replaces your mortgage with a larger one and hands you the difference. It is the cheapest large sum most households can access, because it is secured against a property and priced accordingly — and that same fact is exactly what makes it worth thinking about carefully.

The framing matters more here than on any other page. This is not a way of "releasing" equity you already own, as though the money were sitting somewhere waiting. It is borrowing, secured on your home, repaid with interest over decades. The equity does not move; the debt grows.

What makes it genuinely attractive is the rate. Secured borrowing at mortgage rates is a fraction of what unsecured credit costs, which is why cash-out refinances are so often used to clear card balances. What makes it genuinely dangerous is the same thing: converting unsecured debt into secured debt moves the consequence of non-payment from your credit file to your house.

Reach for this page when you have a large expense to fund, when you are weighing it against a home equity loan or credit line, or when someone has suggested consolidating other debts into your mortgage.

What you are actually trading

Three things change at once, and it is worth separating them. Your balance rises by the cash taken plus any costs financed. Your rate resets to whatever is available today, which may be considerably worse than the one you hold. And your term usually restarts, pushing the end date further out.

That second point deserves emphasis. Anyone who borrowed when rates were low is being asked to surrender that rate on their entire balance in order to access a comparatively small sum. Taking 60,000 while repricing 300,000 upward is frequently a bad trade even when the cash is genuinely needed.

Where that applies, a second charge — a home equity loan or credit line — is usually the better structure, because it leaves the first mortgage untouched and prices only the new borrowing.

Where to go next

Compare the alternatives before committing. The home equity loan calculator and the HELOC calculator both leave your existing mortgage in place, and the home equity calculator shows how much is realistically available under a lender cap.

If your motive is a better rate rather than cash, the refinance calculator and break-even calculator are the right tools. If it is a lower payment on a good existing rate, a recast achieves that far more cheaply.

Because releasing cash raises your ratio, check the effect with the loan to value calculator and the combined loan to value calculator. If the purpose is clearing card debt, run the debt consolidation calculator and the credit card payoff calculator first — the unsecured route is often better than it looks.

How the new loan is worked out

The new principal is built from three components, then a payment is derived from it at whatever rate and term you are offered.

new loan = current balance + cash taken + financed costs   |   new LTV = new loan ÷ property value

current balance

what you owe on the existing mortgage today

cash taken

the sum you wish to receive at completion

financed costs

closing costs rolled into the loan rather than paid up front

The lender cap sets the ceiling

Lenders limit cash-out borrowing to a share of the property’s value, commonly around 80%, and often more tightly than for a straightforward rate-and-term refinance. Apply that cap to the value, subtract what you already owe, and the remainder is the most you could take before costs.

This is why cash-out capacity is far smaller than equity. A household with 153,000 of equity may be able to access only 63,000, and that figure shrinks further once closing costs are accounted for.

Why cash-out is priced worse

Lenders charge more for cash-out than for an equivalent rate-and-term refinance, because a borrower who has just increased their debt and reduced their equity is statistically a higher risk. The premium applies to the whole balance, not just the portion released.

Combined with the reset term, this means the true cost of the cash is considerably higher than the headline rate suggests. Modelling it as "borrowing 60,000 at the mortgage rate" understates it substantially.

The consolidation question, answered honestly

Clearing card debt at rates in the twenties using secured borrowing in the sixes is arithmetically compelling, and the monthly relief is real. Two things qualify it.

First, stretching a short debt across thirty years can cost more in total even at a much lower rate, because interest accrues for so much longer. Second, and more seriously, unsecured debt becomes secured: a balance that could at worst have damaged your credit can now put the property at risk. The rate improvement is the compensation for accepting that, not a free gain.

What resets, and what it costs

A borrower ten years into a thirty-year loan who refinances into a fresh thirty-year term has undone a decade of amortization. The early years of a mortgage are overwhelmingly interest, so restarting means paying that expensive phase twice.

Where a lender offers a term matching what remains, taking it removes most of this cost. Where they do not, overpaying the new loan to your original schedule achieves the same thing voluntarily.

What this page assumes

This calculator adds the current balance, requested cash out, and financed costs to estimate the new loan principal.

Net cash equals requested cash out minus upfront costs. LTV divides new principal by property value, and payment reuses the shared fixed-rate PMT formula.

Worked examples, step by step

Take a property valued at 450,000 with 296,716.44 outstanding at 6.5% and 240 payments remaining. The borrower wants 60,000 in cash, with 4,000 of costs financed, at a new rate of 6.75% over 360 months.

What the transaction actually does

The borrower receives 60,000 and the payment rises by only 127.36 a month, which looks remarkably cheap. The reason it looks cheap is the term reset: 240 remaining payments have become 360, so a larger balance is being spread over an extra decade.

Note also that the loan to value has moved from a comfortable 65.9% to 80.2%, which is at or beyond most lenders’ cash-out ceiling. In practice this borrower would likely be limited to around 63,283 of cash before costs, so 60,000 plus 4,000 of financed fees is right at the edge.

What the extra ten years really costs

The modest payment increase conceals the trade. The borrower was twenty years from owning the property outright and is now thirty, having also repriced the entire balance from 6.5% to 6.75%.

Judge this the way you would any refinance: on total interest across the years you expect to stay, not on the monthly change. A payment that rises by 127 while the term extends by a decade is not a cheap loan — it is a large one, made to look small.

The alternative worth pricing first

A second charge for the same 60,000 would leave the 296,716.44 sitting at 6.5% with 240 payments remaining, and price only the new borrowing. The rate on the second loan would be higher, but it applies to 60,000 rather than 360,716.

Whenever your existing rate is better than what is currently available, run that comparison. The cash-out looks simpler because it produces one loan, and simplicity is worth something — but rarely as much as repricing a large balance upward costs.

The vocabulary, on and around this page

Cash-out refinance

Replacing an existing mortgage with a larger one and receiving the difference in cash. The balance rises and the rate resets.

Rate-and-term refinance

Refinancing without taking cash. It is priced more keenly than cash-out because the borrower’s position does not worsen.

Cash taken

The sum received at completion, which is added to the loan and repaid with interest over the new term.

Financed costs

Closing costs rolled into the new balance rather than paid up front, accruing interest for the life of the loan.

Cash-out cap

The maximum loan-to-value a lender permits when releasing cash, commonly around 80% and tighter than for a rate-and-term refinance.

Available cash

The cap applied to the value less the current balance. Always well below the equity you hold.

Term reset

Restarting the loan over a fresh full term. It suppresses the payment increase while adding years of interest.

Cash-out premium

The additional rate charged for releasing equity, applied to the entire balance rather than just the cash taken.

Secured debt

Borrowing backed by the property. Converting unsecured balances into secured ones moves the risk to your home.

Second charge

Additional borrowing ranking behind the first mortgage. It leaves the existing rate intact and prices only the new sum.

Home equity loan

A fixed-rate lump sum secured as a second charge, and the most direct alternative to a cash-out refinance.

Home equity line of credit

A revolving secured facility, useful when the amount or timing of the need is uncertain.

Equity

Value less secured debt. A cash-out converts part of it into cash and a corresponding increase in what you owe.

Loan to value

The loan as a share of property value. It rises immediately on a cash-out and determines the pricing available.

Valuation

The lender’s assessment of the property, which sets the ceiling on how much can be released.

Underwriting

Full reassessment of income, credit, and the property. A cash-out is a new application and approval is not guaranteed.

Amortization

The repayment schedule. Restarting it means repeating the interest-heavy early years of a mortgage.

Total interest

All interest across the life of the new loan. The measure that reveals what the cash genuinely costs.

Recast

Re-amortizing an existing loan after a lump sum. The opposite transaction, and the right one when a lower payment is the goal.

Reserves

Savings held after completion. Releasing equity to fund a purchase should not leave a household without any.

Common mistakes, and what this page will not do

• Judging it by the change in monthly payment. The example took 60,000 for only 127.36 a month more, because the term stretched from 240 payments to 360. The payment hides the cost.
• Repricing a good rate to access a small sum. Taking 60,000 while moving 300,000 from 6.5% to 6.75% is frequently a poor trade. A second charge prices only the new borrowing.
• Treating equity as money you already have. This is borrowing secured on your home, not a withdrawal. The equity does not move; the debt grows.
• Expecting to access all your equity. Cash-out caps are tighter than ordinary refinance limits. Equity of 153,000 yielded roughly 63,000 of capacity in the example.
• Securing card debt without weighing the risk. A balance that could at worst have damaged your credit becomes one that can put the property at risk. The lower rate is the compensation, not a free gain.
• Stretching short-term debt across thirty years. Even at a much lower rate, a debt that would have cleared in three years can cost more when repaid over three decades.
• Forgetting the cash-out rate premium. Lenders price cash-out above rate-and-term refinancing, and the premium applies to the whole balance rather than the sum released.
• Rolling costs into the loan by default. Financed costs accrue interest for the full term. Paying them up front is cheaper wherever it is possible.
• Counting on the cash before the valuation is in. It is a full application with a fresh valuation, and a lower figure than expected can shrink or eliminate the cash you were relying on.

What this calculator leaves out: This calculator does not include property tax, insurance, or association charges, apply any specific lender’s cash-out caps or rate premiums, produce or verify a valuation, model mortgage insurance, account for tax treatment of interest, or assess whether you would be approved. It builds a new fixed-rate loan from the figures you enter.

Frequently asked questions