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HELOC & Equity calculator. Flexibility now. Discipline later.

A Home Equity Line of Credit gives you a credit line — typically 5–10 years to draw against — secured by your home's equity. You only pay interest on what you actually borrow. Most lenders waive closing costs. The catch most product pages don't mention: when the draw period ends, your payment can double or triple as the line converts to amortizing repayment. Plan for the transition before you draw. Below: how much equity you can tap, max line size at various CLTV, and the payment math that catches new borrowers.

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What brings you here today?

Borrowing Capacity · How Much Can You Tap?

How much HELOC can you actually get?

HELOC capacity depends on your home value, your existing first-mortgage balance, and the lender's combined loan-to-value (CLTV) cap. Most lenders cap CLTV at 85–90% — some go higher for prime borrowers. Move the sliders to see your maximum borrowing capacity at different CLTV thresholds.

Your Numbers

Three inputs. One real maximum.

Current home value$650,000

$200K$2M

Current 1st mortgage balance$345,000

$0 (paid off)$1.5M

Lender CLTV cap85%

70%95%

Your Capacity

Maximum HELOC available to you.

→ Max HELOC Line

$207,500

at 85% combined LTV. Subject to credit, income, and lender review.

Home Value

$650,000

1st Lien

$345,000

Total Equity

$305,000

The math: max line = (home value × CLTV cap) − existing 1st lien balance. Equity is your total potential, max line is what you can actually borrow against. Lenders typically approve 75–100% of the calculated max based on your FICO, DTI, and income.

Combined LTV caps vary by lender and property type. Primary residence: typically 85% conventional, 90% for prime borrowers. Investment property and second homes see lower caps (70–80%). Multi-unit properties even more restrictive.

The Payment Shock · What Happens When Draw Period Ends

Year 10. Your payment doubles.

During the draw period (typically 5–10 years), most HELOCs allow interest-only minimum payments. When draw ends, the line converts to amortizing P&I over the repayment phase — and your monthly payment can double or triple overnight. This is the most-overlooked feature of HELOCs. Use the controls to see your specific transition.

Scenario Inputs

Outstanding balance and current rate.

Outstanding balance$80,000

$10K$200K

Current rate9.000%

5.000%14.000%

Repayment period20 years

10 yr25 yr

Your Transition

When draw period ends, this is what changes.

During Draw (Years 1–10)

Interest-only minimum

$600/mo

$80,000 × 9.00% ÷ 12 MO

After Draw Ends (Years 11–30)

Full P&I

$720/mo

FULL AMORTIZATION OVER 20 YR

→

Your monthly payment increases by $120/month (20%) when draw period ends. Watch the multiplier as balance grows or repayment period shortens. A $150K balance with a 15-year repayment converts a $1,125 interest-only payment into a $1,520 P&I payment — a 35% increase.

Calculations assume your full balance remains at draw-end and converts to fully amortizing P&I. The actual math depends on your specific HELOC terms — some lenders require principal payments during the draw period; some have different repayment structures. Read the loan agreement carefully. CFPB ability-to-repay rules require lenders to assess whether you can afford the post-draw payment, not just the interest-only payment.

Three Phases of a HELOC · What Each Phase Looks Like

A HELOC has three lives.

Most borrowers think about HELOCs as a single product, but they're actually three sequential products. Understanding the structure prevents the year-10 surprise.

→ Origination

The setup

Apply, get approved for a credit line. Lender places second lien on your home. You don't have to draw yet — many borrowers establish a HELOC just to have the credit line available for emergencies, drawing $0 for years.

Time2–4 weeks origination.

Costs$0–$500 typical. Many lenders waive origination + appraisal fees.

Watch outAnnual fees ($50–$150) and early-closure fees if you close within 3 years.

ii.

→ Draw Period (Years 1–10)

The flexibility

Draw against the line whenever you need cash, repay, re-borrow. Most lenders require interest-only minimum payments during this phase. This is the phase that makes HELOCs valuable. Pay down balance to zero and the line stays open for future use.

Length5–10 years typical. Some lenders 7 or 15.

PaymentInterest-only on outstanding balance. $0 owed if balance is zero.

RateVariable, prime-based. Adjusts monthly with prime rate movements.

iii.

→ Repayment Period (Years 11–30)

The conversion

Draw period ends. The credit line closes — you can no longer borrow new amounts. Your outstanding balance amortizes over the repayment period as fully amortizing P&I. This is where the payment shock lives.

Length10–20 years typical. Often 2× draw period.

PaymentFully amortizing P&I on outstanding balance. Can be 2–3× draw-period interest-only.

Watch outSome HELOCs have balloon payment at end of repayment instead of fully amortizing. Always check your specific terms.

The Variable-Rate Question

HELOC rates float with prime. Plan accordingly.

HELOCs are variable-rate products tied to the Wall Street Journal Prime Rate. As of 2026, prime is around 7.50%, and most HELOC margins add 0% to 2.5% on top — putting current HELOC rates in the 7.5%–10% range.

Prime moves with Federal Reserve policy. When the Fed raises short-term rates, prime rises. When the Fed cuts, prime falls. Your HELOC rate adjusts monthly (or quarterly, depending on the loan agreement) to track these moves.

The table on the right shows how a 2% prime rate increase would affect a $80,000 outstanding HELOC balance during the draw period. If your HELOC starts at 9% (interest-only payment $600/mo) and prime jumps 2% over the next two years, your interest-only payment becomes $733/mo. If your balance grows or rates jump more, the increase compounds.

The risk management framework: only borrow on a HELOC what you can comfortably pay at a 2% higher rate than today. If today's $400/mo interest-only stretches your budget, you'd be in trouble at 11% (where it becomes $533/mo). Build the rate cushion into your draw decision.

$80K HELOC · Rate Sensitivity

Current rate (9.00%)$600/mo

+1% (10.00%)$667/mo

+2% (11.00%)$733/mo

+3% (12.00%)$800/mo

+4% (13.00%)$867/mo

Stress-test rule of thumb: if you can afford +2% rate movement on the highest balance you plan to carry, you have meaningful risk cushion. If +1% would stress your budget, your HELOC limit should be lower.

Three Borrowers, Three HELOC Strategies · When It Works, When It Doesn't

Three borrowers. Three different uses.

All three set up HELOCs with similar capacity. One uses it brilliantly. One uses it dangerously. One uses it not at all — and that's its own win.

Just-In-Case Reserve

The Hartman Family

Home value$680,000

1st lien$285,000

HELOC limit$200,000

Average balance$0

Use patternEmergency only

The pattern: opened the HELOC 4 years ago for emergency cash flow, never drawn. Free safety net or wasted credit?

→ FREE SAFETY NET

A standby HELOC. Costs $0 if balance is $0.

Best HELOC use case in mortgage banking. The Hartmans pay $0 in interest because they've drawn $0 — but they have $200,000 of standby liquidity available within 24 hours if a medical emergency, layoff, or unexpected major expense hits. Their annual fee of $75 is the only "cost" of maintaining this safety net.

Compare to alternative liquidity sources: $200K in a high-yield savings account at 4.5% generates $9,000/year of pre-tax income, but ties up that capital. The HELOC alternative lets the $200K stay invested at higher returns (S&P historical average ~10%) while still providing emergency access. For households with strong financial discipline, this is the highest-leverage use of a HELOC.

Watch for: non-use fees on some accounts (lenders can charge $50–$100 per year if balance stays at zero), and lender right to "freeze" the line if home values drop or your credit changes. Both manageable with attention.

ii.

Phased Renovation

Naveed & Layla S.

Home value$540,000

1st lien$210,000

HELOC limit$120,000

Use patternPhased draws

Phase 1 / 2 / 3$30K / $40K / $25K

The pattern: renovating in three phases over 18 months. HELOC vs home equity loan vs cash-out — which structure?

→ HELOC PURPOSE-BUILT

Pay only for what you actually use. $1,800 saved.

Phased spending is the textbook HELOC use case. Naveed and Layla's three phases over 18 months means most of the $95K total only sits as outstanding balance for 6–12 months. The math: weighted-average outstanding balance of ~$50K vs. $95K if they took a home equity loan upfront. At 9% interest, that's $4,050/year saved.

Compare to a $95K home equity loan at 8.5%: even with the slightly lower rate, paying interest on the full $95K from day 1 = $8,075/year. The HELOC saves ~$4,000 in year-one interest alone due to the unused-balance efficiency.

Risk to manage: they need discipline to not draw beyond the project budget. The "easy money" of a HELOC line is famous for scope creep. Setting a hard project budget and tracking against it prevents the renovation from quietly becoming a $130K project. Naveed and Layla committed to no draws beyond contractor invoices for project items.

iii.

Lifestyle Creep

Pete & Sandra M.

Home value$425,000

1st lien$185,000

HELOC limit$170,000

Year-5 balance$140,000

Use patternSlow accumulation

The pattern: $5K–$15K draws every few months for cars, vacations, school. Year 5: balance is $140K and growing. Now what?

DRIFTED INTO TROUBLE

Year 10 is coming. Payment is about to triple.

The HELOC's flexibility became a trap. Each $5–15K draw seemed small in isolation, but compounded. Pete and Sandra's $140K outstanding balance at 9% draw-period interest = $1,050/mo interest-only — manageable on their income. But that's interest-only, paying down zero principal.

Year 10 reality check: when their draw period ends, the $140K (or whatever balance is at that point) converts to amortizing P&I over 20 years at the prevailing rate. Even at the same 9%, payment becomes $1,260/mo — a 20% jump. If rates move higher by year 10 (say 11%), payment is $1,445/mo. And they're paying interest plus principal for 20 years.

What to do now: stop drawing. Begin paying down principal aggressively (at least $1,500/mo above interest-only) to bring balance below $80K before draw end. Or refinance the HELOC into a home equity loan with fixed rate + fixed term — locking in payment certainty. Don't ignore. Year 10 always arrives.

Common Questions · Answered Directly

Six honest answers about HELOCs.

The questions borrowers ask after the loan officer pitch.

01What’s the difference between HELOC and a home equity loan?

Both are second-lien products against your home equity, but their structure is quite different.

HELOC = revolving credit line. Variable rate (prime-based). Draw period (5–10 years) where you can borrow, repay, and re-borrow. Repayment period after that. Best for flexible spending where amounts and timing aren't fully known up front.

Home equity loan = installment loan. Fixed rate, fixed amount disbursed at closing, fixed monthly P&I payment. No draw period. Best for one-time defined expenses where you know the exact amount needed.

Rate comparison: HELOCs currently ~8–10% (variable, prime-based). Home equity loans currently ~7.5–9% (fixed). Home equity loans usually have lower headline rates because the lender is locking in a fixed yield over a longer period.

Closing cost comparison: HELOCs often $0–$500 (lender absorbs costs in exchange for early-closure fees). Home equity loans often $1,000–$3,000 in real closing costs.

For a deeper comparison including cash-out refinance, see our Cash-Out vs HELOC decision tool.

02Can my HELOC line be reduced or frozen by the lender?

Yes — and this surprises many borrowers. Lenders retain the right to reduce or freeze your HELOC credit line if certain conditions occur, even if you've never missed a payment.

Common triggers for line reduction or freeze:

• Significant decline in home value. If your home depreciates such that the line is now over the CLTV cap, the lender can reduce the line.
• Material change in your financial condition. Job loss, bankruptcy, large new debts.
• Your other debts go to collection or you start showing payment problems on other accounts.
• The lender exits the HELOC business. Has happened during financial-crisis periods (2008–2009 saw mass HELOC freezes by major lenders).

If your line is frozen, your existing balance and terms remain — you just can't draw new amounts. This is a real risk in housing-market downturns. Borrowers who relied on a HELOC for ongoing liquidity sometimes lose access exactly when they need it most.

Mitigation: if you have meaningful liquidity needs, keep some cash reserves outside the HELOC. Treat the HELOC as a complement to other liquidity, not the primary source.

03How do I access HELOC funds when I want to draw?

Most modern HELOCs offer multiple draw mechanisms:

• Bank transfer. Online or by phone, transfer funds from the HELOC into your checking or savings. Typically same-day or next-day. This is the most common.
• HELOC checks. Many lenders provide a checkbook tied to the HELOC. Write a check to anyone (contractor, vendor, yourself), and the amount is added to your HELOC balance.
• HELOC debit/credit card. Some lenders offer a Visa or Mastercard linked to the HELOC. Use it like a credit card, and the balance is added to your line.
• Online portal request. Submit a draw request online; funds disburse within 1–3 business days.

Each lender's process differs. Ask before you sign: what draw mechanisms do they offer, what's the typical disbursement time, and are there transaction limits? Some lenders require minimum draw amounts ($500+) or limit number of draws per month.

04If I sell my home, what happens to my HELOC?

The HELOC is paid off at closing from sale proceeds, like your first mortgage. The order of payoff: first mortgage gets paid first from sale proceeds, then HELOC, then any other liens, then you receive whatever's left.

What this means in practice: if your home sells for $500K, first mortgage balance is $250K, HELOC balance is $80K, and selling costs (agent commission, closing costs, transfer taxes) are $35K, you walk away with $135K. The HELOC is fully extinguished at the closing.

If your home sells for less than the combined first-mortgage + HELOC + selling costs (an "underwater" or "short sale" situation), the HELOC may not get paid in full. Negotiating with the HELOC lender is required in this scenario; they may agree to a partial payoff or pursue you for a deficiency judgment depending on state law.

If you're planning to sell within 1–3 years, watch for HELOC early-closure fees — many HELOCs charge $300–$500 if you close the line within the first 36 months (lender's compensation for the upfront origination costs they absorbed).

05Is HELOC interest tax-deductible?

Conditionally — and only for itemizers. Per the Tax Cuts and Jobs Act of 2017, HELOC interest is deductible only if the proceeds are used to "buy, build, or substantially improve" the home that secures the loan.

Examples that qualify: adding a bedroom, replacing the roof or HVAC, substantial kitchen/bath remodel.

Examples that do not qualify: paying off credit cards, funding tuition, buying a car, investing.

The total mortgage debt cap also applies: combined first-lien + HELOC must be under $750,000 for the deduction (post-TCJA limit). Interest on amounts above that cap isn't deductible regardless of use.

Itemizers only — about 90% of taxpayers post-TCJA take the standard deduction, making this rule practically irrelevant for most. Consult a tax advisor for your specific situation; tax rules change annually.

06Can I refinance my HELOC into a fixed-rate product later?

Yes — and several borrowers do exactly this when their draw period is ending.

Strategy 1: Refinance HELOC into a home equity loan. Take the outstanding HELOC balance and refinance it as a fixed-rate, fixed-term home equity loan. Lock in the rate, plan the payments. Especially valuable if you're entering the repayment phase and want certainty.

Strategy 2: Cash-out refinance. Roll your first mortgage + HELOC into a single new first mortgage. Useful if your first-mortgage rate is at or above current market rates (otherwise you'd be re-pricing your existing low-rate balance — see our Cash-Out vs HELOC page for the math).

Strategy 3: Open a new HELOC, transfer balance. If a different lender offers better terms, you can apply for a new HELOC and use the proceeds to pay off the existing one. Functions like a balance transfer.

Time the move correctly: ideally start the refinance process 6–9 months before draw period ends, not after. By the time draw ends and your payment doubles, the right move is already done.

Ready to See Your Numbers

Considering a HELOC? Let's run your specifics.

Sixty-second short application — no SSN, no hard credit pull. We'll quote your specific HELOC rate, calculate your max line at our CLTV cap, and walk you through the draw-period math. If a home equity loan or cash-out refi fits your situation better, we'll say so.

Or call 800.672.9470

NMLS #1796·Lending in 50 states·Equal Housing Lender

Disclosures. All numbers on this page are estimates based on calculator inputs and 2026 typical product pricing. Actual rates, terms, approval, and qualification depend on lender review, credit history, debt-to-income, property value, occupancy, combined-loan-to-value ratio, and lender overlays which may add stricter requirements. Calculator assumptions: HELOC ~9.0% variable rate (prime + 1.0%, prime ~8.0%), interest-only during a 10-year draw period; CLTV cap typically 85% for primary residence (varies by lender). HELOC rates are variable and adjust with the prime rate or other index per loan agreement; payment can change over time. Lenders may reduce or freeze available credit lines when home values decline materially or borrower financial condition changes — even when payments are current. By refinancing your existing loan, total finance charges incurred may be higher over the life of the loan. Tax-deductibility analysis follows current Tax Cuts and Jobs Act of 2017 rules: home-equity-debt interest is deductible only if proceeds are used to "buy, build, or substantially improve" the home that secures the loan; itemizers only. Consult a tax advisor for your specific situation. Calculator outputs are for planning only; actual approved line size and rate require full underwriting. Land Home Financial Services, Inc. NMLS #1796. Equal Housing Lender. Licensed in 50 states.