Top 18-month CD rates currently available include Middlesex Federal SavingsMiddlesex Federal SavingsMAA+5.0 ★Texas Ratio: 0.50% offering IRA 18 Month Variable Rate Certificate at 4.59% APY, and Pathways Financial Credit UnionPathways Financial Credit UnionOHA5.0 ★Texas Ratio: 6.58% offering 18 Month Certificate at 4.35% APY, and Dakota Plains Credit UnionDakota Plains Credit UnionNDA5.0 ★Texas Ratio: 8.57% offering 18 Month IRA CD Certificates of Deposit (CDs) at 4.25% APY, and State Bank of NewburgState Bank of NewburgWIA+5.0 ★Texas Ratio: 0.29% offering 18 mo Variable Rate IRA 18 mo Certificate of Deposit at 4.22% APY.
An 18-month CD bridges the gap between short-term flexibility and longer-term yields. It locks in a competitive rate for a year and a half — ideal for savers who want more than a 12-month commitment without tying up funds for two or more years. We display Safety Grades, Star Ratings, and Texas Ratios so you can choose institutions with confidence.
The APYs displayed reflect actual verified offers. Rates are subject to change at the institution’s discretion without notice. A substantial penalty may be imposed for early withdrawal. 18-Month CD Rates Last Updated and Verified: March 20, 2026
Daily national average APY for 18-month CDs
Daily averages compiled from our database of 8,500+ banks and credit unions — updated daily.
National 18-month CD rates rose 0.098 points this week to 2.592% APY, up from 2.494% last week.
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Minimum $100,000 Deposit to start
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Jumbo
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Under $100,000
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Balance $1,000
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Rate changes quarterly-Quarterly compounding-<br/>$100.00 minimum additions permitted-IRA fund also permitted
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Preferred Rate with any checking account
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$25,000+
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Early Withdrawal Penalties: 180 days interest
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Daily Balance of $99,999.01 or more
Substantial Penalty for early withdrawal. Other conditions may apply.
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Deposit must be drawn from a financial institution other than Finance Factors.
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Traditional / Roth and Education SAs
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A penalty may be imposed for early withdrawals.
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Compounded Monthly
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$250 Minimum Balance
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Minimum Opening Deposit $500.00
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$1,800 Minimum. Early withdrawal penalty = 90 days dividend earned or not.
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Under $100,000; comp semi-annually
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DB4 of
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Interest Compounded Daily | Posted Monthly
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Early withdrawal penalty may apply. Annual payout of dividends required.
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$500 minimum balance required. This annual percentage yield is fixed for the entire term of the certificate.
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$100,000.00 minimum deposit to open and earn APY. Penalty for early withdrawal.
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($100 min. & $2,000 max.)
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Interest paid semi-annually or at maturity. Early withdrawal penalty equal to 180 days interest.
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Direct-Sourced & Verified CD Rate Data: We aggregate 18-month CD rates nationwide directly from the official websites of banks and credit unions using our proprietary rate aggregation technology. By pulling data straight from the institutions’ own digital properties and manually verifying yields daily, every rate 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 1.5-year CD yields across the country. We feature a comprehensive mix of financial institutions — from neighborhood credit unions and competitive regional banks to high-yield CDs from large national institutions.
Daily Updates & Time-Stamped Accuracy: Our rate updaters verify and update CD rates daily. Because yields can fluctuate rapidly based on Federal Reserve policy and market conditions, every CD product listed features its own specific “last updated” date for full transparency.
Proprietary Institution Health & Safety Grades: Beyond tracking rates, MonitorBankRates evaluates the financial stability of every listed institution. Our Health Grades (A+ to F) and Star Ratings are composite metrics calculated using objective regulatory data — including the Texas Ratio — ensuring you deposit with secure, reliable institutions.