Mortgage Refinance Rates in Sioux Falls
Compare mortgage refinance rates from credit unions serving Sioux Falls, South Dakota. Today's best tracked refi rate: 6.625% APR. Zero affiliate bias — rates ranked by true cost.
Sioux Falls mortgage refinance rates from credit unions start at 6.625% APR (median 6.756% APR across the top 2 offers), updated August 2026.
Source: RateAPI.dev
Top Credit Unions for Sioux Falls Refinancing
Ranked by lowest APR. Based on a $400,000 refinance over 30 years.
| Credit Union | Rate | APR | Est. Payment | |
|---|---|---|---|---|
Levo Credit Union 30-Year Fixed | 6.625% | 6.625% | $2,561/mo | Visit Site |
Minuteman Credit Union 30-Year Fixed | 6.875% | 6.888% | $2,631/mo | Visit Site |
When Refinancing Makes Sense in Sioux Falls
Refinancing replaces your current mortgage with a new one — ideally at a lower rate or shorter term. The key question is whether monthly savings recoup closing costs before you move.
Check Your Break-Even
Divide closing costs by monthly savings. Under ~24 months is generally worthwhile. Use the break-even calculator.
Compare Credit Unions
Credit unions serving Sioux Falls often undercut bank refi rates by 0.25–0.50%. Compare at least 3–5 lenders.
Mind Your LTV and Credit
Lower loan-to-value and a score above 740 unlock the best refinance pricing. Cash-out refis price higher than rate-and-term.
Weigh Term Changes
Refinancing into a 15-year term raises the payment but cuts total interest. A shorter term often carries a lower rate.
Credit Unions Based in Sioux Falls
4 credit unions are headquartered in Sioux Falls. Local membership is often the easiest to qualify for — many accept anyone who lives or works in the area.
Frequently Asked Questions
Common questions about refinancing in Sioux Falls
As of August 2026, tracked mortgage refinance rates from credit unions serving Sioux Falls, South Dakota start at 6.625% APR, with a median of 6.756% APR across the top offers. Rates vary by credit score, loan-to-value, and whether you take cash out.
Refinancing makes sense when the new rate is low enough that your monthly savings recoup closing costs before you sell or move — a common rule of thumb is a break-even under 24 months. Use the refinance break-even calculator, then compare credit union offers serving Sioux Falls.
Credit unions serving Sioux Falls, South Dakota frequently beat bank refinance rates because they are member-owned non-profits that return savings through lower rates and fees. Comparing several lenders is the single biggest lever on your refinance cost.
Yes. RateAPI provides daily-updated South Dakota mortgage and refinance rates through a REST API and MCP server, so fintech apps, comparison sites, and AI agents can query credit union rates programmatically.
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