How Is HELOC Credit Limit Calculated?

Are you currently managing a partially paid off mortgage? Depending on the lifetime of your loan, your home may have gained value over the years, while your mortgage balance has gone lower. If that’s the case, you may have acquired a good volume of home equity by now. 

You can use that equity through a HELOC* loan, which allows you to secure a specialized revolving line of credit. But no matter how much equity you’ve accumulated, your exact HELOC credit limit will be approved individually, based on a range of factors in the underwriting. 

To cut it short—you shouldn’t expect your home equity to provide the equal volume of available HELOC credit, but you can prepare for the limit approval aspect-by-aspect. 

*HELOC - home equity line of credit is a revolving credit line (meaning you can borrow from it repeatedly, as long as you stay within your credit limit and repay the debt), which allows you to secure loans based on your home equity’s value. 

HELOC Credit’s Mechanism and Limit Calculation

HELOC credit’s underwriting uses your home as collateral and, once you’ve secured the loan, works almost like a regular credit card. You can borrow up to your credit limit and replenish the balance (either fully or partially), then keep borrowing more, if you need, during the same draw period. 

HELOC credits usually offer a draw period of five to ten years and variable interest rates. The common repayment period lasts from ten to twenty years. The entire procedure thus breaks down into two major phases:

• The draw period, where you pay interest-only on the funds you draw
• The repayment period, where you pay both the interest and principal

But to set this whole thing in motion, you must first apply and qualify for a HELOC loan. For this, HELOC underwriters will be calculating the size of debt they can make available to you based on the value of your home equity. 

To be more specific, the underwriters will be counting in your home’s overall value and how much debt you still owe on its mortgage (which allows subtracting the remaining debt). 

HELOC Credit Limit Formula

To calculate a potential HELOC credit limit, the following formula is used:

Maximum HELOC = (Home value × Maximum CLTV) − Existing secured debt

The CLTV, or combined loan-to-value ratio, is the maximum share of your home's value that a lender is willing to let you borrow. For example, an 80% CLTV limit means that all loans secured by your home, including your mortgage and HELOC, cannot add up to more than 80% of the home's value.

This is a common approach to estimating a HELOC limit, but lenders have different underwriting requirements and maximum borrowing thresholds (then there’s your unique financial circumstance as well).

Factors That Drive Your HELOC Credit Limit

To gain a clear understanding of the HELOC credit limit calculation, it’s important to see how all driving factors come together. The main such factors include:

Your Home’s Appraised Value

The rule of thumb for HELOCs—the more your home is worth, the more you may be able to borrow. However, home equity loan providers use their own appraisal or approved valuation methods, not just your estimate of the property's value.

So if you independently estimate your home is worth, say, $500,000 but the lender values it slightly lower, say, at $470,000, your potential borrowing limit will be lower too. In general, however, the appraised value will be dictated by your property's condition, recent sales in your area, and local market trends.

Your Existing Mortgage Balance and Other Liens

Your current mortgage balance cuts how much you can borrow through a HELOC. The less you owe, the more room you may get for additional credit. The limit will also be lower if you secure other loans using your home equity, like a second mortgage or another HELOC. 

Lender’s Maximum CLTV Ratio

Lenders set their own limits on how much you can borrow based on your home's value. For example, one may allow a maximum CLTV of 80%, while another may offer a higher limit. A higher CLTV can give you access to more credit, but it doesn't guarantee you’ll get approved for the full amount (make sure to check additional requirements for your property).

Your Income and Debt-to-Income Ratio

HELOC providers also want to make sure you can afford the additional debt. To assess this, they look at your income, existing monthly payments, and debt-to-income ratio, or DTI for short.

The DTI allows them to compare your monthly debt payments with how much gross monthly income you make. Generally, the more income you have relative to your debts, the better your chances of qualifying for a larger credit line.

Your Credit Score and History

Your credit score and history of (re)payments can help lenders understand how well you manage debt. A smoother credit profile, with a high score and no missed payments, can boost your chances of approval and help you qualify for better terms. Otherwise, a lower credit line or full-on HELOC denial are pretty real risks. 

Your Property and Its Overall Eligibility

HELOC underwriting will be considering the type, condition, location, and use of your property. Their requirements may differ depending on whether it's your primary home, a second home, or an investment property.

HELOC Calculation Example

Let’s take a set of hypotheticals:

• Your home is currently worth $450,000
• You still owe $270,000 on your mortgage 
• You also have a $10,000 balance secured by your property
• Your lender allows a max CLTV of 80%

If you want to open a HELOC in these circumstances, the calculation will go as follows:

1. Estimated home value: $450,000
2. Max CLTV: 80%
3. Max total allowed debt: $450,000 × 80% = $360,000
4. Existing mortgage balance: -$270,000
5. Other secured debt: -$10,000
6. Estimated max HELOC = $80,000

How to Increase Your Potential HELOC Limit

You cannot sway and control every part of a lender's decision, but you can take steps to improve your borrowing position and, potentially, secure a higher HELOC credit limit.

In particular, you can make sure to:

• Pay down your mortgage principal. If you reduce your outstanding secured debt, there will be more room under the maximum CLTV calculation, opening access to a higher limit.
• Check your home's estimated value. Review recent comparable sales and the property's condition before applying. The lender's own valuation will ultimately determine the value used for underwriting.
• Review other liens and credit lines. Dig into your situation and see how any of your existing home-secured borrowing can affect the HELOC calculation, particularly if another HELOC is open.
• Reinforce your financial profile. Deal with recurring debt payments and make sure to document stable income—take these and other steps to strengthen your ability to qualify for the credit line you need.
• Compare and shop for lenders. You can find more favorable conditions with different available providers, e.g., lenders may offer different maximum CLTV limits and underwriting policies.

Keep in mind that getting a high HELOC credit limit doesn’t mean it will be easier to afford a bigger loan. Instead, a larger credit line gives you flexibility, which you should use to leverage overall more favorable home equity loan conditions.

How LBC Mortgage Can Help You

Do you need to prepare for a HELOC loan application? Let the experts at LBC Mortgage help—we can walk you through the process based on your case, consult on the next best decisions, and automate your mortgage management. 

Author:

Alex Shekhtman CEO & Founder, LBC Mortgage