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HELOC Calculator: How Much Can You Borrow and What Would It Cost?
Use this HELOC calculator to estimate how much of your home equity a lender may make available at a given combined loan-to-value limit, then compare the interest-only draw payment against the fully amortizing repayment payment that follows.
A HELOC calculator estimates your available line by multiplying home value by the lender maximum combined loan-to-value and subtracting your first-mortgage balance. It then shows the interest-only draw payment and the higher amortizing payment during repayment. HELOC rates are typically variable, so payments move with the index.
- ✓Available line is usually home value x the lender combined loan-to-value cap, minus the balance on your first mortgage.
- ✓Draw-period payments are often interest-only on the drawn balance; repayment-period payments amortize and are materially higher.
- ✓HELOC rates are typically variable and tied to an index, so the payment can rise or fall over the life of the line.
- ✓Your home secures the line — missed payments can put the property at risk, which is why the repayment payment matters more than the draw payment.
- ✓Illustrative estimate only. Not a quote, lock, offer, or commitment to lend; binding figures appear on your disclosures.
Written by
Simply Approved Mortgages Team
Licensed Loan Officers · NMLS# 2620881
Get your personalized scenario summary
Complete the short request and a Simply Approved Mortgages Loan Officer sends back a written summary built from your own numbers: estimated payment breakdown, estimated cash to close, the loan structures that fit your file, and what documentation the file will need.
- Estimated monthly payment with taxes and insurance
- Estimated cash to close for your scenario
- Loan options your profile may fit
- Document checklist for your file
Takes about 3 minutes · Summary shown on screen and emailed to you
Illustration only, generated from the information you enter. Not a rate quote, lock, loan estimate, pre-qualification, offer, approval, or commitment to lend. Figures are subject to credit, income, asset and property review and full lender underwriting; binding numbers appear on your Loan Estimate.
Scenario summary
- Purchase price entered
- $412,000
- Down payment entered
- $20,600
- Estimated loan amount
- $391,400
- Estimated cash to close
- $14,300
- Programs reviewed
- 4
Sample layout with example figures — your own numbers replace these. Simply Approved Mortgages LLC · NMLS #2620881 · Equal Housing Opportunity.
HELOC (home equity line of credit) calculator
What changes at end of draw
HELOCs are variable-rate lines tied to a public index (typically the Prime Rate) plus a margin. Rate can move up or down over the draw and repayment periods. Some investors also offer a fixed-rate lock option on all or part of the balance. Illustrative only — not a rate lock or commitment to lend.
Use my estimate — get a HELOC quote
Your Simply Approved Mortgages Loan Officer confirms current investor CLTV caps, index margin, and any teaser rate before you apply.
Next steps
Emailing your HELOC calculator scenario opens our secure request form so a Simply Approved Mortgages Loan Officer can review those numbers. Estimates are illustrative and are not a quote, lock, offer, or commitment to lend.
Assumptions, methodology, and limitations
Draw-period figures assume interest-only payments on the drawn balance at the rate entered; repayment-period figures amortize the ending balance over the remaining term.
HELOC rates are typically variable, so actual payments change with the index; the tool excludes annual fees, draw fees, and combined loan-to-value limits set by each lender.
Results are illustrative estimates only and are not a quote, lock, offer, or commitment to lend. No rate, APR, or program approval is implied. Binding figures appear on your Loan Estimate. Eligibility, terms, and availability vary by borrower, property, lender, loan program, and state.
Run your scenario with a loan officer
Share your numbers and a Simply Approved Mortgages Loan Officer sends back an estimated payment, estimated cash to close, and the structures that fit your file. Educational only — not a quote, lock, offer, or commitment to lend.
How the HELOC Calculation Works
Lenders size a home equity line against combined loan-to-value: the total of all liens on the property divided by its value. If a lender allows 85% combined loan-to-value on a $650,000 home, total lien capacity is $552,500. Subtract a $320,000 first mortgage and roughly $232,500 of line capacity remains, before credit, income, occupancy, and property-type limits are applied to the specific file.
Draw Period vs Repayment Period
Most lines have a draw period, commonly ten years, during which you can access funds and often pay interest only on what you have drawn. After that, the line enters a repayment period in which the outstanding balance amortizes over the remaining term. The payment shock at that transition is the single most underestimated part of a HELOC, and it is why the calculator shows both payments together.
Want these numbers built around your file?
A short request is all it takes to get a written scenario summary back from a Simply Approved Mortgages Loan Officer. Binding figures appear on your Loan Estimate.
What Moves Your Actual Line and Rate
- Credit profile and combined loan-to-value tier.
- Occupancy — primary residences generally receive the highest combined loan-to-value limits.
- Property type, including condominium and multi-unit restrictions.
- Documented income and debt-to-income ratio, calculated with the qualifying payment method the program requires.
- Index movement, because most lines carry a variable rate with periodic and lifetime caps.
HELOC, Home Equity Loan, or Cash-Out Refinance?
- HELOC — revolving access, typically variable rate, useful when spending is staged over time.
- Home equity loan — lump sum with a fixed payment, useful when the amount is known up front.
- Cash-out refinance — replaces the first mortgage entirely, which matters most when the existing first-mortgage rate is higher than current market pricing.
The homeowners who use a line well treat the draw payment as temporary and budget from day one against the repayment payment. When we review equity requests in Florida and Colorado, we model both payments plus the property's full tax and insurance load — Florida insurance renewals in particular have changed the math on plenty of files. If the repayment payment does not fit your budget today, the line is too large, regardless of how much equity the calculator says is available.
Pros & cons — honest tradeoffs
Pros — Pros & cons
- +Draw only what you need, when you need it, instead of financing a lump sum up front.
- +Leaves a low-rate first mortgage untouched.
- +Interest-only draw payments keep early cash flow manageable.
Cons / watch-outs — Pros & cons
- −Variable rate means the payment can increase.
- −Repayment-period payment is materially higher than the draw payment.
- −The home secures the debt, so default risk carries foreclosure exposure.
- −Lenders can reduce or freeze lines under certain conditions described in your agreement.
Compare loan officer compensation on your mortgage quote
Loan officer compensation is part of the cost of a mortgage. On eligible residential loans, Simply Approved Mortgages generally uses 1.5% lender-paid compensation. Enter the compensation shown on another lender's Loan Estimate to see the difference in dollars.
Compensation difference on this illustration: $3,750.
How lower compensation can help you
When less compensation is built into pricing, there can be room for a lower interest rate, which may lower your monthly payment.
Depending on the rate you choose, pricing can sometimes include a lender credit toward third-party closing costs, so you may bring less cash to closing.
A lower rate means a lower monthly payment, which can lower your debt-to-income ratio and may help you qualify for more home on the same income.
As a mortgage broker we compare pricing from wholesale lenders instead of offering a single bank’s retail pricing.
Tip: On page 2 of your Loan Estimate, look at Section A, "Origination Charges." If the lender pays the loan officer, that compensation usually does not appear there as its own line; it is built into the interest rate. That is why comparing the rate and any lender credits side by side matters.
Already have a Loan Estimate from another bank or broker? Share it with a Simply Approved Mortgages Loan Officer, who will compare the rate, fees and credits side by side with options we can arrange. No cost to request a review.
Illustration only — not a quote, lock, offer, or commitment to lend; binding figures appear on your Loan Estimate. Lender-paid compensation is paid by the lender, not directly by you, and is part of the loan's pricing, so the loan is not free of costs. A lower compensation figure does not by itself guarantee a lower rate or lower closing costs; individual results vary by credit, loan type, property and market conditions. Residential lending in FL and CO only. Simply Approved Mortgages LLC · NMLS #2620881 · Equal Housing Opportunity.
Purchase market update
What buyers should know this month
30-Yr Fixed · national avg
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15-Yr Fixed · national avg
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2026 buying power
Conforming baseline: $832,750
FHA floor / ceiling: $541,287 – $1,249,125
Cost and payment tools
Run your payment, affordability, closing cost and refinance numbers
Monthly payment, affordability, closing costs, refinance break-even and early payoff, all on one screen. This page is not written for one state, so property tax, insurance and transfer or recording charges start at neutral placeholder assumptions rather than published averages — Transfer, documentary-stamp and recording charges are set by your state and county — enter your own figure, or open the state page for a sourced seed. Insurance and tax assumptions vary widely by state, county and property, so replace these starting values with quotes for your address. Every figure is an illustrative estimate, not a quote, lock, offer, approval, or commitment to lend.
Your inputs
Estimated result
- Down payment
- $20,000
- Loan amount
- $380,000
- Principal & interest
- $2,402
- Property tax
- $333/mo
- Homeowners insurance
- $167/mo
- Estimated total monthly
- $2,902/mo
Reference sources: Tax Foundation — property taxes paid as a percentage of owner-occupied housing value, NAIC — Homeowners Insurance Report, CFPB — Understanding your Loan Estimate.
Assumptions, methodology, and limitations
Principal and interest use the standard amortization formula on the loan amount you enter. This page does not target a single state, so the property tax and insurance fields start at neutral placeholder assumptions rather than published averages — replace them with figures for your own address, or open the matching state page for sourced seeds. Closing costs apply your state's transfer / documentary-stamp practice (0.00% of price used as the buyer-side seed) plus typical title, recording, appraisal, credit and prepaid escrow lines. Refinance break-even divides your entered costs by the monthly payment difference. Early payoff runs a month-by-month amortization with your extra principal.
These tools do not include mortgage insurance, funding or guarantee fees, HOA special assessments, flood or windstorm premiums, seller credits, lender credits, discount points, or county and municipal charges specific to your parcel. Statewide averages will not match any individual property. Figures are estimates only.
Illustrative only. Binding figures appear on your Loan Estimate, and terms vary by borrower, property, lender, program, and state.
Turn these estimates into real numbers
Send your scenario to a Simply Approved Mortgages Loan Officer and get a written summary back, or compare where rates sit today. Educational only — not a quote, lock, offer, approval, or commitment to lend.
Using your equity
Cash-out, HELOC, or second mortgage — how to choose
There are three common ways to convert equity into usable funds, and the right one usually comes down to one question: is the rate on your existing first mortgage worth protecting? Everything below is structural education — not a quote, lock, offer, or commitment to lend.
Cash-out refinance
Replaces your existing first mortgage with a larger one and returns the difference, less costs, as cash at closing.
Often fits: Borrowers whose current first-mortgage rate is not meaningfully better than what is available today, who want one payment, and who need a larger lump sum.
Watch for: You are re-setting the whole balance at the new rate and usually a new 30-year clock. Closing costs apply to the entire loan amount, and owner-occupied cash-out has its own loan-to-value ceilings by program.
HELOC (home equity line of credit)
A revolving second lien you draw from as needed during a draw period, then repay. The first mortgage stays exactly as it is.
Often fits: Borrowers holding a low first-mortgage rate, staged expenses such as a renovation, or anyone who wants access to funds without drawing all of it.
Watch for: Most HELOCs carry a variable rate, so the payment can move; some have an interest-only draw period followed by a materially higher fully-amortizing payment, plus annual or early-closure fees.
Fixed second mortgage / home equity loan
A one-time lump sum as a fixed-rate second lien behind your existing first mortgage.
Often fits: A known, one-time amount when you want payment certainty and do not want to touch a favorable first mortgage.
Watch for: Second-lien pricing is generally higher than first-lien pricing, and you now carry two mortgage payments with two separate payoff dates.
Example: consolidating higher-cost debt
A homeowner carrying revolving balances and an auto loan may be able to pay those off with a cash-out refinance or a second lien so there is one secured payment instead of several unsecured ones. The monthly outflow can fall because a mortgage is amortized over a much longer term than a card or an auto note. That longer term is also the catch: spreading the same balance over 30 years can increase the total interest paid over the life of the debt even when the monthly figure improves.
The bigger tradeoff is legal, not arithmetic. Credit card and medical balances are unsecured; a mortgage is secured by your home. Consolidating converts unsecured debt into debt your home stands behind. This is not debt settlement, debt relief, or credit repair, and we make no representation about what it will do to your credit scores.
Example: using equity to buy an investment property
Equity pulled from a primary residence is a common source of down payment and reserves on a rental purchase, because it avoids liquidating investments. Underwriting then looks at both properties: the new payment on your primary counts in your debt-to-income ratio, and rental income is generally only credited with documentation the program accepts, often at less than the full rent.
Vacancy, maintenance, insurance on a non-owner-occupied property, and the risk that the rental underperforms all sit on the primary home once its equity is encumbered. Investment property financing also prices and qualifies differently than owner-occupied financing, and business-purpose products are governed by separate rules and availability.
Tapping home equity — the honest tradeoffs
Pros — Tapping home equity
- +Consolidates several payments into one secured payment with a single due date.
- +Mortgage amortization is far longer than card or auto terms, which can lower total monthly outflow.
- +A HELOC or fixed second leaves a favorable existing first-mortgage rate untouched.
- +Funds can be used for renovation, reserves, education, or a down payment on another property.
- +Mortgage interest may be deductible in some circumstances — confirm with your tax advisor, not with us.
Cons / watch-outs — Tapping home equity
- −Your home secures the balance, so unsecured debt becomes debt the property stands behind.
- −Re-amortizing over a longer term can increase total interest paid even when the payment falls.
- −Cash-out refinancing resets the entire first mortgage, including any rate you currently hold.
- −HELOC rates are usually variable and the payment can rise after the draw period ends.
- −Closing costs, appraisal requirements, and loan-to-value ceilings apply, and paid-off revolving accounts can be used again.
HELOC Calculator FAQs
Answers to the most common HELOC calculator questions, written by licensed loan officers.
Ask SAM anything about mortgages
SAM is the Simply Approved Mortgages AI assistant. It answers general questions using the reviewed guides published on this site and links you to the primary government source. It is educational only — it does not quote a rate, payment, APR, approval or commitment to lend. A Simply Approved Mortgages Loan Officer reviews every scenario before any terms are confirmed.
Hi, I'm SAM — an AI assistant for Simply Approved Mortgages. I can explain loan programs, closing costs, DTI, down payments and which calculator or guide to use. I'm not a licensed loan officer, and nothing here is a quote, approval or commitment to lend.
Ask Sam AI provides general educational information only. It is an automated assistant, may be incomplete or out of date, and does not provide legal, tax or financial advice. Nothing it produces is a rate quote, APR, pre-approval, offer or commitment to lend. Never share a Social Security number, ITIN, date of birth, account number or password in chat. Simply Approved Mortgages LLC (NMLS #2620881) arranges residential mortgage loans in Florida and Colorado. Eligibility, terms, conditions and availability vary by borrower, property, lender, loan program and state, and all loans are subject to lender underwriting and approval. Equal Housing Opportunity.
Trusted government resources
These independent government resources can help you research mortgage programs, rates, and your rights before you apply.
Consumer Financial Protection Bureau
What you should know about home equity lines of credit
Federal Trade Commission
Home equity loans and lines of credit — consumer guidance
Internal Revenue Service
Interest on home equity loans and lines of credit
Simply Approved Mortgages is not affiliated with HUD, the CFPB, the FTC, the VA, or any other government agency. Links are provided for your independent verification.
How this page connects
Where this fits in the refinancing and equity library
This page sits inside our Refinancing and equity coverage.
What most readers open next
- The refinance process guideBecause what happens between application and closing.
- Cash-out refinancingBecause the option when you need funds rather than a lower payment.
- The break-even calculatorBecause to see how long it takes to recover closing costs.
- A current value estimateBecause available equity starts with the property value.
Explore the full guide
Keep reading — the rest of the buying playbook
Each of these is a deep-dive on one piece of the purchase mortgage process. Bookmark whichever you need next.
Guide
HELOC Overview
How home equity lines work, who they fit, and what to expect.
Read the guide →Guide
HELOC Rates
What drives home equity line pricing and how the index affects you.
Read the guide →Guide
Home Equity Loans
Fixed-rate lump-sum alternative to a revolving line.
Read the guide →Guide
HELOC vs Cash-Out Refinance
Side-by-side comparison of the two main equity paths.
Read the guide →Guide
Second Mortgages
How second-lien financing is structured and underwritten.
Read the guide →Guide
HELOC in Florida
Florida-specific considerations including insurance and condominium rules.
Read the guide →Guide
HELOC in Colorado
Colorado equity considerations for homeowners.
Read the guide →Internal library
Related mortgage guides across our library
Follow the next relevant guide for your scenario.
Start My Approval
Complete this short request and a Simply Approved Mortgages Loan Officer will personally review your scenario. The form only asks what your program actually needs. Submitting it is not an application for credit and is not a commitment to lend.
Tell us about your scenario
The form below is tailored to HELOC — only the questions and documents your program needs.
Simply Approved Mortgages LLC is licensed to arrange residential mortgage loans in Florida and Colorado only. We ask first so we never collect a mortgage inquiry we are not licensed to act on.
HELOC line size depends on your home value, current mortgage balance, and combined LTV cap.
Enter the property address. We'll pull an automated home value (AVM) after you submit — no charge to you and no impact to your credit. You'll see your estimated AVM value on the confirmation screen once you submit.
A range is enough here — no credit report is pulled and your credit is not affected.
Illustrative estimate only — not a quote, rate lock, offer of credit, or commitment to lend.
Submitting this form is not an application for credit and is not a commitment to lend. No credit report is pulled at this step.
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We update these guides as HUD, FHFA, VA, USDA and CFPB publish new figures. If you want our updates to show up more often when you search Google, you can mark us as a preferred source from the Top Stories carousel:
- 1Sign in to your Google account and search a mortgage topic such as "mortgage rates".
- 2Select the icon next to "Top stories" to open the preferred sources panel.
- 3Search for Simply Approved Mortgages, tick the box, and save.
Preferred sources is a Google Search feature controlled entirely by you and by Google. Simply Approved Mortgages LLC (NMLS #2620881) does not control search results and makes no representation about how or whether our content will appear. Educational content only — not a quote, lock, offer, or commitment to lend.
Simplify Your Mortgage Journey with These Resources
Talk To A Loan Officer
A Simply Approved Mortgages Loan Officer will personally connect with you to walk through your options.
Mortgage insights & guides
Plain-language articles to help you understand the home loan process, save on closing costs, and make confident decisions.
7 things every first-time homebuyer should know before applying
From credit prep to down payment assistance, here’s how to walk into your first mortgage application with confidence.
Using your VA loan benefit: a step-by-step guide
Eligibility, the Certificate of Eligibility, funding fees, and how to maximize zero-down purchasing power.
Where your closing costs actually go (and where you can save)
A line-by-line breakdown of the Loan Estimate and the fees that are negotiable versus fixed.
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Simply Approved Mortgages LLC | NMLS #2620881
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Equal Housing Opportunity
Broker identification. Simply Approved Mortgages LLC is a mortgage broker and is not a direct lender. We arrange residential mortgage loans with third-party wholesale lenders and do not make the lender's final credit decision or fund the loan. We arrange residential mortgage loans in Florida and Colorado. Business-purpose mortgage products may be arranged in additional states only where permitted by applicable law and pursuant to applicable licensing requirements or exemptions.
Credit and program terms. All loans are subject to lender credit approval, underwriting, acceptable appraisal or valuation when required, title review, insurance, and supporting documentation. Eligibility, programs, rates, APRs, points, lender credits, fees, payments, terms, loan amounts, down-payment requirements, mortgage insurance, and availability may vary based on borrower, property, occupancy, credit profile, loan-to-value ratio, debt-to-income ratio, lender, loan program, and state and may change without notice. Not all applicants, properties, products, or programs will qualify or be available in every state. Nothing on this site constitutes a loan approval, rate lock, offer, commitment to lend, guarantee of approval, or guarantee of terms or closing.
Rates, payments and calculators. Rates, APRs, payments, down payments, loan amounts, home values, estimated equity, savings, affordability estimates, closing costs, and other calculator or scenario results displayed on this site are estimates or illustrations unless expressly stated otherwise. Actual loan terms may differ. Taxes, homeowners insurance, mortgage insurance, association dues, lender charges, broker compensation, discount points, third-party charges, and other costs may apply. Advertised rates, payments, APRs, down payments, and other credit terms are subject to the assumptions and disclosures presented with the applicable advertisement. Applicable loan terms and disclosures will be provided as required for the particular transaction.
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