Conventional Loan
Conventional Loan Eligibility in Rural South Dakota
Reviewed by the HomeMath editorial team Updated 2026-08-06
Key takeaways
- Minimum credit score of about 620 for most conventional loans.
- Down payment as low as 3 % for primary residences, but 20 % avoids private mortgage insurance.
- Total debt‑to‑income ratio generally must stay at or below 45 % (with 36 % for housing costs).
- Property must meet conventional appraisal standards and be located in a qualifying rural area.
- South Dakota’s lack of state income tax can help reduce your taxable income calculation for qualifying purposes.
Conventional loans are the most common mortgage product for buyers who want a loan that isn’t backed by a government agency. In rural South Dakota, the basic eligibility rules are the same as elsewhere, but a few local factors can influence the calculation.
Credit score and history
Lenders usually look for a minimum FICO score of around 620. A higher score can lower the interest rate and reduce the need for a larger down payment.
Down payment and private mortgage insurance (PMI)
For a primary‑home purchase, conventional lenders often accept as little as 3 % down. If you put down less than 20 %, the loan will require PMI until the balance falls below that threshold.
Debt‑to‑income (DTI) ratios
The total DTI – all monthly debt obligations divided by gross monthly income – generally must stay at or below 45 %. The portion that covers housing costs (principal, interest, taxes, insurance) is usually limited to 36 %.
Rural property requirements
- The home must pass a conventional appraisal, which confirms market value and that the property meets basic safety and livability standards.
- Even in sparsely populated areas, the property must have adequate access to utilities or a documented plan for water, sewer, and electricity.
- Loans for manufactured or mobile homes may have additional eligibility criteria.
South Dakota‑specific considerations
- South Dakota does not levy a state income tax, so lenders base qualifying income on federal taxable income without a state deduction.
- Many rural transactions are closed by an attorney rather than a title company, which can affect closing‑cost timing but not eligibility.
This article provides general information and should not be taken as personalized advice. Consult a qualified mortgage professional to understand how these guidelines apply to your individual situation.
FAQ
Can I use a conventional loan for a home that qualifies for a USDA rural loan?
Yes. USDA loans are a separate, government‑backed option that often requires no down payment, but you can still apply for a conventional loan if you prefer. The eligibility criteria for a conventional loan—credit score, down payment, DTI—remain the same, and the property must still meet the conventional appraisal standards.
How does South Dakota’s lack of state income tax affect conventional loan qualification?
Because there is no state income tax, lenders calculate your qualifying income based on your federal taxable income without subtracting a state tax liability. This can slightly increase the amount of income that counts toward the debt‑to‑income calculation, potentially making it easier to meet the DTI limits.
Do I need a co‑signer if my credit score is just above the minimum threshold?
A co‑signer is not required solely because your score is near the minimum, but lenders may ask for one if other factors—such as a high DTI or limited cash reserves—raise risk. A co‑signer with stronger credit can improve loan terms or help you qualify for a lower down payment.
What role does an attorney play in the closing process for rural South Dakota home purchases?
In South Dakota, many rural closings are handled by an attorney rather than a title company. The attorney reviews the deed, ensures the title is clear, prepares closing documents, and may hold funds in escrow. This legal oversight protects both buyer and seller, but it does not change the basic eligibility requirements for the loan.
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