Conventional Loan Requirements: The Full Checklist for 2026

Conventional loan requirements determine whether you qualify for a mortgage that is not backed by the government. These loans, guided by Fannie Mae and Freddie Mac, cover primary residences, second homes, and investment properties. The requirements change based on how you plan to use the property. A primary home may need just 3% down, while a rental property often requires 15% to 25% down and larger cash reserves. This guide walks through every standard lenders use in 2026, from credit score minimums to debt-to-income limits and property count restrictions.

Before diving into the details, make sure you understand the income requirements for a conventional loan and credit score requirements for a conventional loan. These two factors are the foundation of your approval.

What Are Conventional Loan Requirements?

Conventional loan requirements are the qualification standards set by Fannie Mae and Freddie Mac, and adopted by most mortgage lenders. Unlike FHA or VA loans, conventional loans are not insured by a government agency. This means lenders carry more risk and often apply stricter guidelines, especially for second homes and investment properties. The core requirements cover credit score, down payment, debt-to-income ratio, cash reserves, and the number of financed properties you own.

Credit Score Requirements

The minimum credit score for a conventional loan is typically 620. Many lenders prefer a score of 680 or higher for the best pricing and terms. A higher credit score can also help you qualify for a lower down payment program, such as a 3% down conventional loan. For a detailed breakdown of how your score affects your rate and approval odds, read our guide on conventional loan credit score requirements.

Down Payment Requirements

Down payment requirements depend on the property type and the loan program. For a primary residence, you may qualify for as little as 3% down through programs like HomeReady or Home Possible. A second home typically requires at least 10% down. An investment property usually requires 15% down for a single-family rental and 25% down for a two- to four-unit property. A larger down payment can lower your interest rate and reduce the lender's risk.

If you're buying a primary residence, explore our 3% down conventional loan programs comparison to see which option fits your situation.

Debt-to-Income Ratio

Lenders review your debt-to-income ratio, or DTI, to confirm you can afford the new mortgage along with existing debts. Most lenders cap DTI at 45% for a conventional loan, though some allow up to 50% with strong compensating factors such as high reserves or a large down payment. For a deeper dive into DTI calculations, including how student loans and other debts are treated, check out our debt-to-income ratio guide.

Cash Reserve Requirements

Cash reserves are funds left over after closing that could cover several months of mortgage payments. Lenders often require reserves for second homes and investment properties. A common requirement is two to six months of reserves, though the amount can rise if you own multiple financed properties. Reserves can include savings, checking, retirement accounts, and other liquid assets.

Property Type and Occupancy Requirements

Conventional loans cover one- to four-unit properties. The occupancy type affects your down payment and reserve requirements. A primary residence has the most flexible guidelines, followed by a second home, and then an investment property. A fourplex purchased as an investment typically requires at least 25% down and higher reserves. If you're considering a multi-unit property, review our investment property loan guide for details.

Limits on the Number of Financed Properties

Fannie Mae guidelines allow a borrower to hold up to ten financed properties, including the primary residence. Loan requirements become stricter as the number of financed properties increases. Borrowers with five or more financed properties face higher reserve requirements and stricter credit standards. If you're building a rental portfolio, see our article on conventional loans for rental properties.

Conventional Loans Compared to FHA and VA Loans

FHA and VA loans are built for primary residences and generally cannot fund a pure investment property purchase. A conventional loan is the standard financing option for a rental property purchase because it does not require owner occupancy. Investors who want a multi-unit property to live in one unit and rent the others may still qualify for FHA or VA financing, but a true investment property purchase relies on a conventional loan. If you're weighing your options, see our comparison of VA loans vs conventional loans.

Closing Costs on a Conventional Loan

Closing costs on a conventional loan include the appraisal, title insurance, lender fees, and prepaid items such as property taxes and insurance. For investment properties, you should also budget for the rent schedule addendum on the appraisal, which adds a modest fee compared to a standard primary residence appraisal. Use our mortgage calculators to estimate your monthly payments and see how closing costs affect your bottom line.

Steps to Qualify for a Conventional Loan

• Check your credit score and pay down existing debt before applying.
• Save for a down payment of at least 3% for a primary home or 15% to 25% for an investment property.
• Gather two years of tax returns, recent pay stubs, and proof of reserves.
• Get preapproved before making an offer. Use our prequalification guide to get started.
• Provide a lease agreement or rent schedule if the property already has a tenant.

Pros and Cons of Conventional Loans

Pros: No owner-occupancy requirement for investment properties, no upfront government mortgage insurance fee, and the ability to finance up to ten properties. Conventional loans also offer more flexibility than government-backed loans for second homes and rentals.

Cons: Larger down payment requirements for investment properties, higher interest rates than primary residence loans, and stricter reserve requirements. Borrowers with lower credit scores may face higher rates or difficulty qualifying.

Frequently Asked Questions

What credit score is required for a conventional loan?

Most conventional loans require a minimum credit score of 620. Lenders often prefer a score of 680 or higher for the best interest rates and terms. A higher score can also help you qualify for a lower down payment program. For more details, see our credit score requirements guide.

How much down payment do I need for a conventional loan?

Down payment requirements vary by property type. A primary residence may qualify for as little as 3% down through programs like HomeReady or Home Possible. Investment properties typically require 15% to 25% down. A second home usually requires at least 10% down. Explore our 3% down programs for primary residences.

What is the maximum debt-to-income ratio for a conventional loan?

Most lenders cap the debt-to-income ratio at 45% for a conventional loan, though some allow up to 50% with strong compensating factors such as high cash reserves or a large down payment. Our debt-to-income guide explains how DTI is calculated.

Are cash reserves required for a conventional loan?

Cash reserves are often required, especially for investment properties and second homes. A common requirement is two to six months of mortgage payments left over after closing. The amount can rise if you own multiple financed properties.

How many financed properties can I have with conventional loans?

Fannie Mae guidelines allow up to ten financed properties per borrower, including your primary residence. Stricter requirements apply once you pass four financed properties, including higher reserve requirements and lower DTI limits. See our rental property guide for more information.

Use our mortgage calculators to estimate your monthly payments and DTI ratio. We also offer a cash-out refinance calculator for investors considering pulling equity from their rental properties.