Best Money Market Rates in Watertown, South Dakota - June 2026
Brian McKay
Brian McKay
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Current Watertown, South Dakota and the surrounding area money market deposit account rates include American Bank & TrustAmerican Bank & Trust1600 4th St Ne, Watertown, SD 57201A+5.0 ★Texas Ratio: 2.47% Money Market Special at 3.00% APY, Avanti Federal Credit UnionAvanti Federal Credit Union1620 4th St NE, Watertown, SD 57201 8604B+4.8 ★Texas Ratio: 16.54% Money Market at 0.75% APY, Frontier Bank Sioux Falls, SDFrontier Bank Sioux Falls, SDA+5.0 ★Texas Ratio: 0.00% Money Market Select at 3.25% APY, Bank MidwestBank MidwestA+5.0 ★Texas Ratio: 1.45% Premier Money Market at 3.04% APY, and Service First Federal Credit UnionService First Federal Credit UnionA+5.0 ★Texas Ratio: 2.31% Premier Money Market at 2.00% APY. Money market rates as of June 3, 2026 according to verified data from MonitorBankRates.
Watertown has 2 local institutions in our database, with money market rates as high as 3.00% APY from American Bank & Trust at 1600 4th St Ne, Watertown, SD 57201. Use the table below to compare all available offers, including options from institutions serving the broader South Dakota area. Rates are continually updated — we recommend checking back frequently.
Rates reflect recent market quotes and representative offers available to depositors in Watertown, South Dakota and surrounding area. Last Updated and Verified: June 3, 2026
Compare the Best Money Market Rates Today in Watertown, South Dakota & the Surrounding Area
new money market accounts with a balance over $15,000
No monthly service charge. Free Statements- paper or electronic! Free Online Banking, Free Mobile Banking with Mobile Deposit.
Limited time offer
Limited time offer
Limited time offer
6 transfers allowed per month; 3 checks allowed per month; Minimum Balance $1,500
$10,000 minimum opening balance
Limited time offer
6 transfers allowed per month; 3 checks allowed per month; Minimum Balance $1,500
$10,000 minimum opening balance
$10,000 minimum opening balance
$10,000 minimum opening balance
$2,500 minimum opening balance
Limited time offer
As High As
Banks and Credit Unions: If you identify an incorrect rate or wish to request the removal of your institution’s data, please contact us here.
Watertown, SD Money Market Rate Trends
Compare local Watertown, SD money market quotes against the statewide average
Daily money market rate averages tracked across our database of 8,500+ banks and credit unions — updated every evening.
South Dakota high-yield MMA rates currently average 3.003% APY.
South Dakota standard MMA rates currently average 1.099% APY.
Methodology & Data Sources
Independent, Free, and Unbiased Rate Comparisons: MonitorBankRates.com is an independent rate comparison service. Our Watertown, South Dakota money market rate tables are free for consumers to use, and we do not receive payment from any financial institution to be included or to be ranked in any particular order. Listings are based solely on the rates each institution publicly advertises on its own website.
A Note on Third-Party Rate Tools: Some pages on our site also feature rate comparison widgets and tools provided by third-party partners. These tools may include sponsored listings or affiliate links, and we may receive compensation when users click through them. We clearly label these widgets so you can tell at a glance which rates come from our independent MonitorBankRates.com tables and which come from our advertising partners.
Direct-Sourced & Verified Money Market Rate Data: We aggregate money market deposit account rates for Watertown, South Dakota directly from the official websites of banks and credit unions using our proprietary rate aggregation technology and a dedicated team of rate updaters. Every money market rate displayed on MonitorBankRates.com is highly accurate and trustworthy.
Local, Regional, and National Coverage: Our systems constantly monitor the market to provide a complete picture of available yields in Watertown, South Dakota. We feature a comprehensive mix of institutions from neighborhood credit unions and mid-sized regional banks to large national institutions available to savers in SD.
Daily Updates & Time-Stamped Accuracy: Our rate updaters verify and update money market rates daily. Because MMA yields can fluctuate rapidly based on market conditions, every product listed features its own specific “last updated” date, giving you complete transparency.
Frequently Asked Questions about Money Market Accounts in Watertown, South Dakota
What is a Money Market Account (MMA)?
Are Money Market accounts in Watertown, South Dakota safe?
How often do MMA rates change in Watertown, South Dakota?
Can I write checks from a Money Market Account?
How much do I need to deposit to open a money market account in Watertown, South Dakota?
Best Money Market Rates in Watertown, South Dakota
- American Bank & Trust
Money Market Special — 3.00% APY - Avanti Federal Credit Union
Money Market — 0.75% APY - Frontier Bank Sioux Falls, SD
Money Market Select — 3.25% APY - Bank Midwest
Premier Money Market — 3.04% APY - Service First Federal Credit Union
Premier Money Market — 2.00% APY
Watertown, South Dakota Rates & Resources
