A conventional mortgage can be a flexible way to buy a home in Tennessee, but approval is not based on a single credit score or down-payment percentage. The lender evaluates the full file: credit history, eligible income, monthly debts, assets, cash to close, reserves, occupancy, property, loan amount, and the underwriting result. This guide explains the requirements Tennessee buyers should understand before preapproval and how those requirements work together. For a broader product overview, see conventional home-loan options.
Quick answer: An eligible Tennessee buyer may use a conventional loan with as little as 3% down for a qualifying one-unit primary residence, but 20% down is not a universal requirement. Credit, stable qualifying income, DTI, verified funds, property and occupancy rules, the applicable county loan limit, and lender underwriting all affect the result. PMI usually applies when the first mortgage starts above 80% LTV.
Attribute | Working Requirement | What Can Change It |
Credit | A complete credit profile and underwriting result | Manual and automated rules differ; lender overlays and pricing can be more restrictive. |
Income | Stable, eligible, documented qualifying income | Salary, overtime, commission, self-employment, retirement, rental, and other sources use different analyses. |
DTI | Full housing payment plus qualifying monthly debts divided by gross qualifying income | Manual Fannie Mae files generally use 36%, or up to 45% with conditions; DU casefiles may allow up to 50%. |
Down payment | As little as 3% for selected one-unit primary-residence programs | Occupancy, property type, units, first-time-buyer status, product, and underwriting findings can change the minimum. |
PMI | Generally required when the first mortgage starts above 80% LTV | Cost depends on credit, LTV, coverage, term, property, occupancy, and insurance structure. |
Assets and reserves | Documented funds for closing plus any required post-closing reserves | The underwriting system, number of financed properties, occupancy, and units can change the requirement. |
Property | Acceptable appraisal, title, insurance, condition, and project eligibility | Condos, manufactured homes, unique properties, and multi-unit homes can require additional review. |
Loan amount | Within the applicable county and unit limit for conforming treatment | The county and number of units determine the current loan limit. |
The phrase “3% down conventional loan” can describe several distinct 97% LTV options, not one universal program. Fannie Mae’s 97% LTV comparison distinguishes Standard 97 and HomeReady. Freddie Mac offers Home Possible and HomeOne. The exact product should be identified during preapproval because its borrower, income, property, education, mortgage-insurance, and underwriting rules can differ.
Program | First-Time-Buyer Rule | Income Rule | Key 97% LTV Context |
At least one first-time buyer | No product income limit | Eligible one-unit principal-residence purchase; automated underwriting and program requirements apply. | |
Not required | Qualifying income at or below 80% of AMI | Affordable option with income and education requirements that can differ from Standard 97. | |
Not required by the product | Qualifying income generally at or below 80% of AMI | 97% LTV may be available for eligible one-unit properties with flexible eligible funding sources. | |
Purchase must include a first-time buyer | No product income or geographic limit | Low-down-payment option for eligible first-time buyers; property and underwriting rules still apply. |
For Tennessee buyers who may use state housing-finance assistance, the Tennessee Housing Development Agency’s Freddie Mac HFA Advantage program is a separate conventional option to review with a THDA-approved lender. The first mortgage and any assistance must both allow the proposed structure.
A 620 score is commonly associated with conventional eligibility, but it needs context. Fannie Mae’s credit-score requirements list 620 for applicable manually underwritten fixed-rate loans. Automated underwriting evaluates the complete risk profile, and lenders may apply overlays. Clearing a score threshold does not guarantee approval, a specific rate, or a particular PMI cost.
Payment history, revolving balances, collections, major derogatory events, account depth, inquiries, and loan structure can matter. Before closing, avoid new accounts, higher card balances, co-signed debt, or unnecessary disputes without discussing the timing with the loan officer; a new payment or credit change can alter DTI and underwriting.
Standard conventional financing has no single national income ceiling. Affordable products and assistance programs can impose income limits, while every income source still must be eligible, stable, documented, and likely to continue. Pay statements, W-2s, and employment verification may document salary income. Overtime, bonus, commission, self-employment, retirement, rental, support, and asset-based income require source-specific analysis. Gross deposits or business revenue do not automatically equal qualifying income.
DTI is total qualifying monthly obligations divided by gross qualifying monthly income. The full housing payment commonly includes principal, interest, property taxes, homeowners insurance, PMI, HOA dues, and required flood insurance. Fannie Mae’s current DTI guidance sets a 36% maximum for manually underwritten loans, potentially up to 45% when specified credit-score and reserve requirements are met; DU casefiles may allow up to 50%. These are underwriting boundaries, not approval promises.
Assume a buyer has $8,500 in gross monthly qualifying income, a $2,450 projected full housing payment, and $625 in other qualifying monthly obligations.
DTI Input | Educational Amount |
Gross qualifying monthly income | $8,500 |
Proposed full housing payment | $2,450 |
Other qualifying monthly debts | $625 |
Total monthly obligations | $3,075 |
DTI calculation | $3,075 / $8,500 = 36.2% |
Educational example only. Actual DTI treatment depends on the automated or manual underwriting method, credit, reserves, LTV, property, documentation, and lender requirements.
Twenty percent down can avoid borrower-paid PMI at closing, but it is not the minimum for many primary-residence purchases. The best amount is not automatically the smallest or largest: a lower down payment preserves cash but increases the loan balance and normally PMI, while a larger down payment may reduce payment but leave fewer liquid reserves.
This educational example assumes a $400,000 one-unit primary residence. It excludes closing costs, prepaid taxes and insurance, escrow deposits, discount points, credits, assistance, and required reserves.
Down | Cash Down | Base Loan | LTV | Decision Consideration |
3% | $12,000 | $388,000 | 97% | PMI generally applies; selected program eligibility is required. |
5% | $20,000 | $380,000 | 95% | PMI generally applies; uses $8,000 more cash than 3% down. |
10% | $40,000 | $360,000 | 90% | PMI may cost less than at higher LTV, but pricing is file-specific. |
20% | $80,000 | $320,000 | 80% | Borrower-paid PMI is generally not required; substantially more cash is used. |
The down payment is only one part of cash to close. The CFPB’s Loan Estimate explainer explains where estimated closing costs and cash to close appear. Compare the full payment with a mortgage payment calculator and retain enough documented funds for closing and post-closing needs.
PMI protects the lender, not the borrower. The premium can vary with credit, LTV, coverage, term, property, occupancy, and insurance structure. The CFPB’s PMI cancellation guidance explains that eligible borrowers may generally request cancellation at 80% of original value when conditions are met; automatic termination generally occurs at 78% when the loan is current. Lender-paid mortgage insurance can work differently.
Eligible Fannie Mae personal gifts may fund permitted down payment, closing costs, or reserves for a principal-residence or second-home transaction, subject to donor, contribution, and documentation rules. Gifts are not allowed for Fannie Mae investment-property transactions. Grants and down-payment assistance must be compatible with both the first mortgage and the assistance program.
Reserves are verified assets remaining after closing, often measured in months of the housing payment. They are separate from down payment and closing costs. Requirements can increase for second homes, investment properties, multiple financed properties, multi-unit homes, higher DTI, or manual underwriting.
Conventional financing can cover an eligible primary residence, second home, or investment property, but requirements differ. Lowest-down-payment options typically focus on a one-unit owner-occupied primary residence. Second homes, rentals, multi-unit properties, non-occupant borrowers, and subordinate financing can require more equity, reserves, or review.
The lender also reviews valuation, title, insurance, flood information, condition, and marketability. Condominiums add project review. Manufactured homes, acreage, accessory units, private roads, wells, septic systems, and unusual properties may require more documentation.
Loan limits are another county-specific variable. For 2026, the FHFA conforming-loan-limit resource lists a $832,750 baseline for one-unit properties in most U.S. counties. The applicable Tennessee limit depends on the county and number of units. A purchase price can exceed the limit when the down payment keeps the loan amount within it; a loan within the limit is still subject to the rest of underwriting.
A useful preapproval tests the loan structure rather than producing a letter from unverified estimates. A mortgage preapproval letter is conditional, not a guaranteed loan offer. For the broader shopping process, see the site’s Tennessee mortgage-preapproval guide. Before making an offer, organize the following:
Define the transaction. Identify the Tennessee county, expected price, property type, number of units, occupancy, and down-payment range.
Authorize and review credit. Confirm the credit data the lender will use and address freezes, errors, recent late payments, disputes, or major credit events.
Document qualifying income. Gather current pay statements, W-2s, employment details, and source-specific records for overtime, commission, bonus, self-employment, retirement, rental, or other income.
Document assets, gifts, and assistance. Provide bank, retirement, and investment statements; identify earnest money, gift funds, grants, assistance, and large deposits early.
List every monthly obligation. Include installment loans, revolving debt, student loans, support obligations, other mortgages, HOA dues, and co-signed obligations that may count.
Build a property-specific payment. Use realistic Tennessee property taxes, homeowners and flood insurance when applicable, HOA dues, PMI, rate, and loan term.
Compare the available structure. Review the projected 3%, 5%, and other applicable down-payment options for payment, cash to close, PMI, reserves, county limit, and underwriting conditions.
Keep the file stable. Before closing, avoid new credit, large undocumented transfers, job changes, reduced hours, or new debt without first discussing the effect with the loan officer.
Government-issued photo identification and the information needed for the credit review.
Recent pay statements and W-2s, or the applicable self-employment, retirement, benefit, rental, or other income documentation.
Recent bank, investment, and retirement statements used for closing or reserves.
Gift letter and transfer evidence when gift funds are used.
Supporting records for significant credit, income, employment, or deposit issues.
Purchase agreement and property information after an offer is accepted.
Use the lender’s secure application or document portal for sensitive personal and financial information.
No score guarantees approval. Fannie Mae lists 620 for applicable manually underwritten fixed-rate loans, while automated underwriting evaluates the overall risk profile. Lenders may apply overlays, and credit also affects pricing and PMI.
Possibly. Selected programs can allow 97% LTV for an eligible one-unit primary residence. First-time-buyer, income, property, automated-underwriting, and mortgage-insurance rules can apply. Cash to close includes more than the down payment.
Fannie Mae manual underwriting generally uses 36%, or up to 45% with specified credit-score and reserve requirements. DU casefiles may allow up to 50%. Lenders can be more restrictive, and the complete risk profile still controls.
Standard conventional financing has no universal income ceiling. HomeReady, Home Possible, housing-finance-agency loans, grants, and assistance may impose limits. Income still must be eligible, stable, documented, and likely to continue.
Putting at least 20% down commonly avoids borrower-paid PMI at closing. With less than 20% down, PMI is generally required unless another permitted mortgage-insurance structure is used. Eligible borrowers may be able to cancel borrower-paid PMI later.
Eligible gifts may cover permitted down-payment, closing-cost, or reserve funds on qualifying principal-residence or second-home transactions, subject to donor, transfer, documentation, and contribution rules. Fannie Mae does not allow gift funds on investment-property transactions.
Possibly. The first mortgage and the assistance program must both permit the structure, and the borrower must satisfy the eligibility, documentation, occupancy, repayment, and funding rules for each. Review assistance terms before treating it as a grant with no repayment obligations.
No. Preapproval is conditional. Final approval still depends on updated documents, acceptable property, appraisal, title, insurance, underwriting conditions, and no material adverse changes before closing.
Conventional approval is a combined decision. Credit affects eligibility, pricing, and PMI; income must be usable; debts determine DTI; and down payment must be considered alongside closing costs and reserves. Occupancy, property type, units, and the Tennessee county limit can change the best structure.
Compare payment, cash to close, PMI, reserves, and conditions at two or more down-payment levels. Start a Tennessee mortgage qualification review to identify options that fit the borrower, property, and county before making an offer.
Written by Rodney Rose
NMLS #1396861
Rodney Rose is a California mortgage professional dedicated to helping families navigate home financing with confidence. Through clear guidance on mortgage programs, loan options, and down payment assistance, Rodney Rose helps homebuyers make informed decisions and move closer to achieving their homeownership goals.