What is the difference between a bridge loan and a HELOC for a home purchase?

A bridge loan is a short-term lump sum loan (6-12 months) that gives you the down payment for a new home before your old home sells. A HELOC is a revolving line of credit secured by your home equity that you draw from as needed. Bridge loans close faster (1-2 weeks vs 30-45 days) but carry higher rates and balloon repayment risk. HELOCs are more flexible with no balloon deadline but take longer to obtain.

When should I choose a bridge loan over a HELOC?

Choose a bridge loan when you need to move fast — for example, to make a non-contingent offer in a competitive market. Bridge loans close in 1-2 weeks compared to 30-45 days for a HELOC. Also use a bridge loan if your home is already listed for sale, since many HELOC lenders will not approve a line of credit on a property that is actively for sale.

When should I choose a HELOC over a bridge loan?

Choose a HELOC when you have 30-45 days of lead time and want more flexibility. The HELOC typically has a lower rate than a bridge loan and no hard balloon payment deadline — you can hold it for years if needed. Also, with a HELOC you only pay interest on the amount you actually draw, not the full approved limit, which can save money if your needs are variable.

What happens if my home does not sell before the bridge loan term ends?

If your home does not sell within the bridge loan term (typically 6-12 months), the full principal balance comes due as a balloon payment. Most lenders offer extensions of 3-6 months, but at additional cost. This balloon risk is the main disadvantage of bridge loans — it creates pressure to accept lower offers. Always ask your lender about extension terms before signing.

Can I get a HELOC if my home is already listed for sale?

No — most lenders will not approve or fund a HELOC on a property that is actively listed for sale. If you want to use a HELOC for transitional financing, you must apply and get approved before listing your home. Once listed, you will generally need to use a bridge loan instead. This is a critical timing consideration when planning your move.

Bridge Loan vs HELOC Calculator

Compare the true cost of a bridge loan against a HELOC for buying a new home before your current one sells. Calculate monthly payments, total financing cost, and which option saves money based on your timeline, equity, and how fast you need to move.

Home Equity Available

Amount Needed for New Down Payment

Expected Sale Timeline

months

Bridge Loan Rate

HELOC Rate

Bridge Loan vs HELOC — 6-Month Cost

Bridge Loan

$1,188/mo

Interest-only

Total: $10,125

Interest + origination fee

HELOC

$1,094/mo

Interest-only on drawn balance

Total: $7,063

Interest + setup fee

Lower cost option

HELOC is cheaper by $3,063 over 6 months. HELOC wins with its lower rate despite the flexible structure.

Bridge Monthly Interest

$1,188/mo

9.5% on $150,000

HELOC Monthly Interest

$1,094/mo

8.8% variable rate

Bridge Total Cost

$10,125

Interest $7,125 + origination $3,000

HELOC Total Cost

$7,063

Interest $6,563 + setup $500

Advanced

Speed, Flexibility & Repayment Comparison

Structural differences that drive the choice between bridge and HELOC

Speed is often the decisive factor — especially in competitive markets where buyers need to close quickly on a new home before selling the old one.

Bridge Loan Timeline

Application1-2 days

Simplified underwriting focused on equity

Appraisal3-5 days

Quick desktop appraisal often acceptable

Underwriting3-7 days

Asset-based — credit less critical

Closing10-14 days total

From application to funded

Best for: urgent competitive offers

HELOC Timeline

Application1-2 days

Full credit review required

Appraisal5-10 days

Full appraisal typically required

Underwriting14-20 days

Full income/debt/credit review

Closing30-45 days total

Standard TRID disclosure timeline

Best for: planned transitions with lead time

Competitive market strategy: In a hot market, needing 30-45 days for HELOC approval may cost you the home. A bridge loan closes in 1-2 weeks and lets you make a non-contingent offer. The extra cost of the bridge ($3,063 more than HELOC) may be far less than the cost of losing a bidding war on a home you want.

Pro

Total Cost, Risk Analysis & Sale-Contingent Strategy

Full financial model, balloon risk, and when to skip both options

Bridge Origination Fee

% of loan

HELOC Setup Fee

Actual HELOC Draw Amount

Bridge Loan (Full Cost)

$10,125

Interest: $7,125

Origination (2.0%): $3,000

Rate: 9.5% on $150,000

HELOC (Flexible Draw)

$4,875

Interest on $100,000 drawn: $4,375

Setup fees: $500

Rate: 8.8% variable

HELOC cost at different draw amounts:

HELOC Draw %	Amount Drawn	Monthly Payment	Total Cost	vs Bridge
50% of max	$75,000	$547/mo	$3,781	HELOC saves $6,344
75% of max	$112,500	$820/mo	$5,422	HELOC saves $4,703
100% of max	$150,000	$1,094/mo	$7,063	HELOC saves $3,063

How to Use This Calculator

Enter your Home Equity Available (current home value minus mortgage balance), the Amount Needed for your new home down payment, and the Expected Sale Timeline in months. Then enter the rates you have been quoted for each product. The calculator shows monthly payments, total cost for each option, and which is cheaper over your timeline.

Use the Advanced section to compare structural differences (speed, flexibility, repayment), and the Pro section for total cost modeling with different HELOC draw amounts and risk analysis.

Bridge Loan vs HELOC Cost Formula

Bridge Loan Monthly Interest = Loan Amount x (Annual Rate / 12)
Bridge Total Cost = (Monthly Interest x Months) + Origination Fee

HELOC Monthly Interest = Drawn Amount x (Annual Rate / 12)
HELOC Total Cost = (Monthly Interest x Months) + Setup Fees

Bridge Balloon Payment = Full Loan Amount (due at home sale)
HELOC Payoff = Drawn Balance (paid when convenient)

The key math difference: bridge loans charge interest on the full funded amount from day one. HELOCs only charge interest on what you actually draw. If you draw less than the maximum, the HELOC advantage grows significantly.

Example: $150,000 Needed for 6 Months

$250,000 equity available — bridge at 9.5% vs HELOC at 8.75%

	Bridge Loan	HELOC
Monthly Interest	$1,188/mo	$1,094/mo
Total Interest (6 months)	$7,125	$6,563
Origination/Setup Fee	$3,000 (2%)	$500
Total Cost	$10,125	$7,063
Close Speed	1-2 weeks	30-45 days
Balloon Risk	Yes — at term end	No — flexible

In this scenario, the HELOC saves $3,062 over 6 months, primarily due to the lower origination fee. However, if you need to make a non-contingent offer in a competitive market and cannot wait 30-45 days for HELOC approval, the $3,062 premium for the bridge loan may be worth paying to secure the home you want.

Frequently Asked Questions

A bridge loan is a short-term (6-12 month) interest-only loan that provides a lump sum to fund a new home purchase before your current home sells. A HELOC is a revolving line of credit against your home's equity — you draw what you need and pay interest only on the drawn balance. Bridge loans close faster (1-2 weeks) but have higher rates, balloon repayment, and origination costs. HELOCs offer more flexibility, lower rates, and no balloon deadline, but take 30-45 days to obtain.

Choose a bridge loan when speed is critical — to make a non-contingent offer in a competitive market, or when your home is already listed for sale (most HELOC lenders will not approve a line of credit on a listed property). Bridge loans close in 1-2 weeks, giving you a significant speed advantage. Also consider a bridge loan if your credit or income situation makes full HELOC underwriting challenging, since bridge underwriting focuses primarily on equity value.

Choose a HELOC when you have enough lead time (30-45 days), want flexibility, and your home is not yet listed for sale. The HELOC typically offers a lower rate than a bridge loan, has no hard balloon payment deadline, and lets you draw only what you need. If your new home down payment requirement is flexible (you might need $100K or $150K depending on what you find), the HELOC's on-demand access is more cost-effective than a fixed bridge loan amount.

Yes — if the seller of your new home accepts a sale contingency, you avoid bridge or HELOC costs entirely. A sale-contingent offer means your purchase is conditional on selling your current home. In a buyer's market or with a motivated seller, this is often accepted. In a competitive seller's market, however, a contingent offer is frequently rejected in favor of non-contingent offers. That is where bridge loans and HELOCs earn their keep.

If your home does not sell within the bridge loan term (typically 6-12 months), the full principal balance comes due as a balloon payment. Most lenders offer extensions of 3-6 months for an additional fee. This balloon risk can pressure you into accepting a lower offer for your old home than you would like. Always negotiate the extension terms before signing the bridge loan, and have a backup plan if the sale takes longer than expected.