How Much Can You Borrow on a HELOC When Returns Understate Income?

The Quick Read: It depends on which of two limits is lower: the equity limit, which caps combined loans against the home’s value, or the income limit, which caps debt payments against the income the lender is allowed to count, and when your returns understate what you earn, the income limit can bind first. Both tests must clear. Most investors only run the first one.

• The equity test is a combined loan-to-value cap, minus your existing first mortgage.
• The income test is a debt-to-income cap, with a maximum of 50% on the network programs described below.
• On an investment property, the network ceiling is 70% combined loan-to-value, with a 700 minimum credit profile and a $500,000 maximum line.
• On a primary residence or second home, the ceiling can reach 90%, but only at a 720-or-better credit profile.
• Title matters: an LLC cannot hold title on these lines, so a property deeded to an LLC usually points toward a DSCR cash-out refinance instead.

Key Terms Defined

Combined loan-to-value (CLTV) is your first mortgage plus the new line, divided by the home’s appraised value.

Debt-to-income (DTI) is your monthly debt payments, including the new line, divided by your qualifying monthly income.

Qualifying income is the income a lender is willing to count, which is not always the income you actually earn.

Draw period is the stretch when you can borrow from the line and pay interest only, before repayment of principal begins.

DSCR is the debt service coverage ratio, which compares a rental’s income to its full monthly obligation (principal, interest, taxes, insurance, and any association dues).

Why Do Returns Understate Income in the First Place?

Returns show net profit, and net profit is computed after deductions. A business owner subtracts expenses, vehicle costs, and home-office costs. A rental owner subtracts mortgage interest, repairs, and depreciation. Depreciation is the tricky one, because it is a paper expense. You never write that check, yet it shrinks the bottom line.

So a rental can collect rent above its costs and still show a thin or negative result on the return. A larger portfolio often shows this more, not less. Those deductions can be legitimate and valuable at tax time. They also reduce what a return-based lender sees.

Tax treatment varies; consult a qualified professional.

What Limits Your Borrowing on a HELOC When Returns Understate Income?

Two ceilings apply at once, and the lower one wins. The equity ceiling comes from value and leverage. The income ceiling comes from DTI measured on the income the lender counts. The CFPB’s HELOC booklet describes the equity side plainly: a lender sets a credit limit as a percentage of appraised value, then subtracts what you still owe on the mortgage. The FTC adds that the amount you can borrow depends on your income, credit history, and the home’s market value together.

That second point is where understated returns do their damage. Equity might support a large line. A thin qualifying income can cap it well below that.

How Do You Calculate the Equity Ceiling?

Take the CLTV cap times the appraised value, then subtract your existing first mortgage balance. That is the most the equity test allows.

Here is the arithmetic in percentages. Say a home appraises at a given value and the first mortgage equals 50% of it. On an investment property at the network’s 70% CLTV ceiling, the line cannot exceed 20% of the appraised value. At a lower credit tier or a looser valuation, the cap can be lower still.

The ceilings on this network depend on how you use the property. They are tiered by occupancy and credit profile, and the figures are subject to lender guidelines and full file review.

Notice what the table says about your rental. The investment ceiling is 70% with no higher tier. The 90% figure belongs to primary residences and second homes, and only at 720 or better. Market surveys and bank marketing often quote higher percentages for equity lines in general. Those describe the broader market, not what this network offers on an investment property.

A few more equity-side limits are worth knowing:

• A line above $500,000 is for primary residences only, needs at least a 700 credit profile (720 on the longer-runway structure), caps at 75% CLTV, and requires a full appraisal.
• Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal, though a higher CLTV may require a second valuation.
• The line is a standalone first or second lien, and a borrower is limited to three lines in total.

How Do You Calculate the Income Ceiling?

The income ceiling is where understated returns bite. On the network programs, DTI tops out at 50%. It sits at 45% for credit profiles from 600 to 679, and a ratio above 45% requires at least a 680 score. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you actually borrow on day one.

Read that last sentence twice. Even if you plan to draw modestly, the test assumes a full line. Capacity drops accordingly.

Now watch what thin qualifying income does. Suppose your real income is a number, but your returns show only 60% of it. Existing debts that equal 30% of your real income equal 50% of your return income. That already hits the 50% ceiling before the new line adds a single payment. The equity could be enormous, and the line would still shrink or be declined.

The fix is rarely a bigger down payment or more equity. Equity does not repair a DTI problem. Only a higher counted income, lower existing debts, or a different product does.

Which Documentation Path Counts Your Income?

Documentation rules are lender policy, so the path you take changes the income figure the lender reads. A return-based path reads net income, often averaged across two years. A declining year can pull that average down. Some lenders offer a deposit-based path that is reviewed on documented income under the applicable program, subject to lender guidelines. That path reads bank deposits rather than returns, and write-offs matter less there.

Alternative documentation is still documentation. Deposits get screened, and the lender applies its own adjustments. Whether a given program offers a deposit-based option is something to confirm on your specific file, because it varies by lender and program.

What Else Can Shrink the Line?

Several program rules can cap the line even when equity and income both look good.

Credit. The program floor is 600, but an investment line needs 700. Lenders use a single-bureau score keyed to the primary wage earner, and the report can be no more than 90 days old at closing. Housing history standards apply across all financed properties.

Property type. Single-family homes, 2-4 units, PUDs, townhomes, and condominiums (including non-warrantable) are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural zoning are not offered.

Portfolio size. A borrower who owns more than 15 financed properties is not eligible. Combined exposure across lines is capped, at $2,000,000 on the higher-leverage structure and $750,000 on the longer-runway structure.

Credit events. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure-family events follow a 7-year and 4-year seasoning path on investment files.

Value drops. The CFPB warns that a lender may freeze or reduce an open line if home value falls significantly. A line you counted on can shrink after you have already planned around it.

Does the Structure Fit a Long-Hold Rental?

A HELOC is a revolving line, and the structure matters for a rental plan. An investment line runs a 5-year interest-only draw, followed by a 25-year fully amortizing repayment. At least 75% of the line is drawn at closing. The line’s pricing floats across both periods and never converts to fixed.

That last point is the tradeoff. A line with floating pricing and a repayment period that starts after the draw ends behaves differently from a fixed-term loan. Investors planning a long hold sometimes prefer the predictability of a fixed structure. Others like the flexibility of a line. Both can make sense, and the choice depends on your plan for the funds.

One availability note: HELOC placement runs through Lendmire’s 16 full-service states, which is narrower than its 41-market DSCR footprint, Washington, D.C. included.

When Should You Skip the HELOC and Use DSCR Cash-Out?

If your returns are the problem, a loan that tests the property instead of your personal return is worth a look. A DSCR cash-out refinance qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Personal tax-return income is not the center of the file.

The numbers differ from the HELOC side. Across most of the network, a cash-out refinance on a standard rental tops out around 75% LTV, and about 6 months of seasoning is the common expectation. Credit expectations are typically around 660 for most programs, with a 620 floor in parts of the network and 700-plus unlocking the strongest leverage tiers. Loan sizes run up to $3,000,000 on standard programs (smaller balances available through select lenders), and reserves vary by lender, leverage, and loan size, commonly around 6 months of PITIA (principal, interest, taxes, insurance, and any association dues).

On coverage, 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better pricing and leverage.

One caution deserves its own sentence. Clearing 1.00 does not mean positive cash flow. DSCR compares rent to PITIA only, so repairs, vacancy, management, utilities, and capital expenses all sit outside the calculation.

Entity ownership is the other sharp difference. A HELOC requires title held by you personally or by a revocable living trust. A DSCR cash-out can often work for a property held in an LLC, subject to lender program eligibility. A property already deeded to an LLC therefore needs a vesting change to use a HELOC, or a DSCR cash-out instead.

Lendmire’s complete DSCR loans guide lays out how those programs work.

Which Path Fits Your File?

The strongest files clear both tests: enough equity and enough counted income or rental coverage. A bigger down payment or lower balance can lift the equity side, and it can lower the monthly payment that feeds your ratios. It never removes a leverage cap, a credit floor, or a property eligibility rule.

A Pre-Application Checklist

Run these checks before you apply anywhere.

1. Confirm the occupancy and title: individual name or revocable trust, not an LLC.

2. Estimate the equity ceiling using the CLTV cap for your occupancy and credit tier.

3. List every monthly debt and compare it to the income your documentation path will actually show.

4. Check whether a deposit-based documentation path exists for your lender and program.

5. Compare the HELOC against a DSCR cash-out if your return income is the weak link.

If the gap between your real income and your return income is large, a conversation with your tax professional before you apply is worth the time. Do not change how you report income just to qualify.

If you are considering a home equity line and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals.

About Lendmire

Lendmire — NMLS# 2371349 — is a mortgage broker that arranges home equity lines of credit in its 16 full-service states through wholesale lenders, on primary residences, second homes and investment properties. Every line is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB HELOC booklet

2. FTC – Home equity loans and home equity lines of credit