HELOC Calculator

See your max credit line, both phase payments, and the payment shock most lenders don't warn you about.

Your home
HELOC details
Analysis
Max credit line available
Combined loan-to-value (CLTV)
Draw-period payment
interest-only
Repayment-period payment
principal + interest
Total interest over full term
draw + repayment combined
Draw phase
Rate
Monthly payment
Duration
Interest paid this phase
Repayment phase
Rate
Monthly payment
Duration
Interest paid this phase

AI analysis

Analyzing your HELOC...

Matched HELOC lenders for your credit profile

Example lender profiles matched to your credit tier. We'll show real partner offers here as they become available.

Rate ranges reflect typical market data; see our methodology for sources.

Rates shown are illustrative ranges based on typical market offers for the selected credit score range. Actual HELOC rates are variable (prime + margin), depend on your full credit profile, income, CLTV, and lender criteria. This is not financial advice. Consult a licensed financial advisor before tapping home equity.

Frequently asked questions

What is a HELOC and how does it work?

A Home Equity Line of Credit (HELOC) is a revolving credit line secured by your home's equity. It has two phases: a draw period (typically 10 years) where you can borrow and make interest-only payments, and a repayment period (typically 20 years) where you must repay principal plus interest.

What is HELOC payment shock?

Payment shock is the sudden jump in monthly payment when a HELOC transitions from the draw period to the repayment period. Interest-only payments of $150/month can become full amortizing payments of $450/month or more — often catching borrowers off guard a decade into the loan.

How much can I borrow with a HELOC?

Most lenders allow you to borrow up to 80-85% of your home's value minus your existing mortgage balance. On a $500,000 home with a $300,000 mortgage, you could typically access $100,000-$125,000 in HELOC funds.

Is a HELOC or a home equity loan better?

A home equity loan gives you a lump sum with a fixed rate and payment — predictable and best for one-time expenses. A HELOC is a flexible line of credit with a variable rate — best for ongoing projects or emergency reserves. Choose based on whether you need flexibility or predictability.

Are HELOC interest payments tax deductible?

Under current tax law, HELOC interest is deductible only if the funds are used to buy, build, or substantially improve the home that secures the loan. Using a HELOC for debt consolidation, vacations, or other purposes generally does not qualify. Consult a tax professional for your specific situation.

What happens if I can't afford the repayment period payment?

If you cannot afford the repayment period payment, options include refinancing the HELOC into a home equity loan with a longer term, refinancing into your primary mortgage, selling the home, or negotiating modified terms with the lender. Because the HELOC is secured by your home, foreclosure is a real risk if payments are missed.

What credit score do I need for a HELOC?

Most lenders require a minimum 620 credit score, though pricing improves meaningfully at 740+ and best rates typically land at 800+. Some HELOC specialists — Spring EQ, Figure — will work with scores in the 580–620 range when compensating factors are strong. Below 580, options narrow considerably; a home equity loan or a credit-building period before applying is usually the better path.

Can I pay off a HELOC early?

Yes, in virtually all cases. Most HELOCs have no prepayment penalty, meaning the balance can be paid down at any time without fees. A small number of lenders charge early-closure fees if the line is closed within the first 2–3 years — those show up as "early termination fee" or "account closing fee" in the disclosures and are worth scanning for before signing.

Is HELOC interest tax deductible?

Under current IRS rules (post-2017 TCJA), HELOC interest is deductible only when the borrowed funds are used to "buy, build, or substantially improve" the home securing the loan. Using a HELOC to pay off credit cards, fund tuition, or cover living expenses does not qualify for the deduction. A tax professional is the right source for applying this to a specific situation — this isn't tax advice.

What's the difference between a HELOC and a cash-out refinance?

A HELOC is a second mortgage (the original loan stays in place) with a variable rate and revolving credit. A cash-out refinance replaces the existing mortgage with a new, larger loan — typically at a fixed rate — and hands over the difference in cash. Cash-out refi usually has higher closing costs but offers rate certainty. HELOCs close faster and cheaper but carry variable-rate risk and the repayment-phase transition.

Can I lose my home if I default on a HELOC?

Yes. A HELOC is secured by the home. If payments stop, the lender can foreclose. This is the core risk that separates home equity products from unsecured borrowing like credit cards and personal loans — the house is collateral, which is why rates are lower and why the consequences of default are severe.

How long does it take to get approved for a HELOC?

Traditional lenders typically take 2–6 weeks from application to funding — appraisal, title work, and underwriting all need to clear. Digital-first lenders like Figure and Aven market sub-week funding for qualified borrowers by using automated property valuation models and streamlined underwriting. Actual timelines depend on property complexity and documentation responsiveness.

Do HELOCs have closing costs?

Many HELOCs close with no out-of-pocket costs — the lender covers them in exchange for a minimum draw at closing or a commitment to keep the line open for 2–3 years. Others charge $200–$500 for appraisal and processing. The APR disclosure, which includes fees, is the cleanest apples-to-apples comparison between lenders.

What happens to my HELOC if home values drop?

Lenders reserve the right to freeze or reduce available credit if a home's value drops enough that CLTV moves outside their limits. This happened widely during the 2008–2009 housing downturn — HELOCs were frozen even for borrowers current on payments. Already-drawn balances remain the borrower's responsibility, but further access to the line can be cut off with short notice.

Comparing borrowing options? See the Refinance Calculator for cash-out refi math, or the Debt Consolidation Calculator if you're eyeing HELOC for paying down higher-rate debt.

How much can I borrow with a HELOC?

Most lenders cap your combined loan-to-value (CLTV) at 85% of your home's appraised value. That means your mortgage balance plus the HELOC can't exceed 85% of what your home is worth. For a $450,000 home with a $250,000 mortgage, the math is ($450,000 × 0.85) − $250,000 = $132,500 in available credit. Some lenders go up to 90% CLTV, but rates and fees get noticeably worse above 80%.

HELOC payment calculator: draw period vs. repayment period

A HELOC has two distinct phases. The draw period (usually 10 years) is when you can borrow against the line. Most lenders require interest-only payments during this phase — which is why the payment looks so affordable at first. The repayment period (usually 10–20 years after that) is when the line closes and you have to pay back the principal plus interest at whatever the current variable rate is. This calculator shows both so you see the full picture, not just the draw-period number.

HELOC draw-period payment (interest-only)

During the draw period, your monthly payment is just the interest on your outstanding balance. The formula is balance × APR ÷ 12. On a $60,000 balance at 8.5% APR, that's about $425/month — no principal reduction. This is genuinely cheap money month-to-month, which is both the appeal and the trap: the principal isn't going anywhere.

What happens when HELOC repayment period starts?

The switch from draw to repayment is what catches people off guard. Your interest-only payment converts to a fully amortizing payment that pays down the principal over the remaining term (often 20 years) — at whatever the variable rate is on day one of repayment. If rates have risen during your draw period (which happens), the combined effect can double or triple the monthly payment overnight. The "payment shock" callout above shows you exactly what that looks like for your numbers, including an optional +2% stress test modeling a realistic rate environment.

Is a HELOC right for you?

HELOCs fit some borrowing situations well and fit others poorly. The pattern across the three scenarios below isn't a recommendation — it's a description of how the math tends to work out depending on where a borrower lands on equity cushion, use case, and income stability.

When the math tends to favor it

  • CLTV stays below 70% after the draw
  • Funds go toward something that holds or builds value — home improvements, education, a business investment with returns above the rate
  • Income is stable through the full 20–30 year horizon of draw plus repayment
  • A principal-paydown plan exists before the repayment phase starts
  • Interest deductibility applies (funds used for home improvement)

When the math is borderline

  • CLTV lands in the 70–85% band
  • The purpose is consolidating higher-rate debt without a principal-paydown plan
  • Income is variable or early-career
  • A home equity loan (fixed rate) would meet the same need with less rate risk
  • Use case is short-term liquidity that could be covered another way

When the math tends not to favor it

  • CLTV would exceed 85%
  • Funds go toward depreciating consumption — vehicles, vacations, daily expenses
  • Income wouldn't absorb a 2× payment jump at repayment
  • A +2% rate stress test makes the repayment payment unaffordable
  • Retirement or a planned home sale falls inside the HELOC's full term

HELOC pros and cons

The same features that make HELOCs appealing — low starting payment, revolving access, lower rates than unsecured borrowing — also create the risks that trip people up. Both sides are worth seeing clearly before signing.

Pros

  • Among the lowest rates of any consumer borrowing product, because the home is collateral
  • Interest-only payments during the draw period keep monthly cost low
  • Revolving credit — borrow, repay, and re-borrow during the draw period
  • Interest may be tax-deductible when funds are used for home improvements
  • Typically no cost to keep the line open unused — useful as a liquidity backstop
  • Funding is often faster than cash-out refinance

Cons

  • Variable rate tied to prime — can rise during the draw period
  • Payment shock at repayment transition can be 2–3× the draw-period payment
  • The home is collateral — default puts the property at risk
  • Most lenders cap CLTV at 85%, limiting access to deep equity
  • Some HELOCs carry annual fees, inactivity fees, or early-closure fees
  • Lenders can freeze or reduce a line if home values drop (as happened widely in 2008–09)

How to qualify for a HELOC

Lenders weigh four factors when underwriting a HELOC: credit score, combined loan-to-value (CLTV), debt-to-income ratio (DTI), and proof of stable income. Typical floors are a 620 credit score, CLTV under 85%, DTI under 43%, and two years of verifiable income. Rate pricing sits on top of those minimums and depends heavily on where the credit score lands.

Exceptional credit (800+)

Best available rates — typically prime flat or prime + 0.25%. Most major lenders approve up to 90% CLTV at this tier. Fixed-rate advance options (converting portions of the line to a locked rate) are commonly offered. Funding usually takes 2–5 weeks through traditional lenders and under a week through some digital-first lenders.

Very good credit (740–799)

Rates typically prime + 0.25% to 0.75%. Standard 85% CLTV cap at most lenders, with a feature set similar to the exceptional tier. A handful of digital lenders — Figure and Aven, for example — advertise funding in under a week for borrowers in this range.

Good credit (670–739)

Rates typically prime + 0.75% to 1.5%, with CLTV capped at 80–85% depending on lender. Fixed-rate advance options are sometimes more limited. Credit unions frequently price below banks at this tier, making three-way comparisons (bank, credit union, digital) worthwhile before committing.

Fair credit (580–669)

Rates typically prime + 2.5% to 4%, with CLTV usually capped at 80%. Some major lenders won't approve below a 680 score, which narrows options to HELOC specialists like Spring EQ, credit unions, and regional banks. Documentation is typically heavier and approval timelines longer. A home equity loan (fixed rate) is sometimes easier to qualify for than a HELOC at this tier.

Poor credit (below 580)

HELOCs generally aren't available below a 580 score. A small number of specialty lenders consider applications in the 580–620 range when compensating factors are strong — low CLTV, high income, long employment — but rates start at prime + 5% or higher. Waiting to build credit past 620 before applying typically saves more than the wait costs.

HELOC vs. home equity loan

Both products borrow against home equity, but the mechanics differ in ways that matter. A HELOC is a revolving line of credit with a variable rate, interest-only payments during the draw period, and flexibility to borrow repeatedly up to the limit. A home equity loan is a lump-sum second mortgage with a fixed rate and a fixed monthly payment from day one.

The fit usually comes down to two questions: does the money need to go out all at once or over time, and does rate certainty matter more than the lowest possible starting payment? HELOCs win on flexibility and low initial payments. Home equity loans win on predictability — rate and payment are locked for the life of the loan, which matters most when consolidating debt or funding a one-time, known expense.

Feature HELOC Home equity loan
Rate type Variable (prime + margin) Fixed
Disbursement Draw as needed during draw period Lump sum at closing
Payment structure Interest-only during draw, P+I in repayment Fixed P+I from day one
Payment during draw Lower (interest only) Higher (fully amortizing)
Payment risk Variable rate plus phase transition None — payment is fixed
Best fit Ongoing or uncertain expenses, flexibility One-time known expense, predictability
Typical term 10-year draw + 10–20 year repayment 5–30 years fixed

Common HELOC mistakes

The patterns below aren't obscure edge cases — they're the recurring reasons HELOC borrowers run into trouble. Understanding them before signing tends to matter more than rate-shopping within a few tenths of a percent.

  1. Anchoring on the draw-period payment

    Lenders advertise the interest-only payment because it's the smaller, friendlier number. Borrowers often budget against that figure for a decade without accounting for the transition. The repayment-phase payment is the one that actually governs long-term affordability — running the math on both is what separates a working plan from a surprise in year 11.

  2. Using HELOC funds for consumption instead of investment

    The math works best when borrowed funds produce value that offsets the interest cost — home improvements that add equity, education that raises income, a business investment with returns above the rate. Funding vacations, vehicles, or daily expenses means paying interest to consume, which becomes especially expensive once the repayment phase starts.

  3. Borrowing near the 85% CLTV ceiling

    Borrowing right up to the lender's cap leaves no room if home values drop 5–10%, which is historically unremarkable during a downturn. When that happens, the lender can freeze or reduce the line, and combined housing debt can slip into underwater territory. Holding CLTV under 80% is the common pattern among borrowers who don't get caught by this.

  4. Ignoring variable-rate risk

    HELOCs are tied to prime, which moves with the Fed's target rate. Historically, 2% swings over a 10-year span are normal, not catastrophic. Budgeting against today's rate without modeling a realistic rate environment is how borrowers end up shocked when the payment rises — and it's why a stress test is built into this calculator.

  5. No plan for the repayment transition

    One pattern in well-managed HELOCs is paying more than the interest-only minimum during the draw period, reducing principal before the repayment phase hits. The more common pattern is paying only the minimum and carrying the original principal into repayment, where the amortizing payment lands with full force. A principal-paydown plan before day one of repayment is what separates the two outcomes.