Best CD rates in Boulder, CO

Requirements

Product: Fixed rate for the term. Requires a $5,000 minimum opening deposit. Special interest rates apply to initial term only and automatically renew for the disclosed renewal term at standard rates in effect at maturity. Maximum aggregate deposit limit of $2.5 million. Public funds are not eligible. Early withdrawal penalties apply.

Offer: Relationship rate; requires linked Prime Checking, Premier Checking, or Private Bank Interest Checking account at open and renewal. Renews to a 6-month term at 0.05% APY.

Requirements

Product: A minimum opening deposit of $1,000 is required for all CD accounts. Penalty for early withdrawal. Fees may reduce earnings. At the end of Promotional CD term, account automatically converts to the Standard consumer CD term that is closest to but not greater than Promotional CD term, at the applicable Standard rate. No withdrawals without penalty within first seven days. No partial withdrawals permitted. The $1.00 - $999.99 tier is for Renewal Only.

Offer: Renewal Only. Promotional rate.

Requirements

Product: No monthly fee. Early withdrawal penalties may apply. Pair with Premier Checking to receive a 0.10% interest rate bonus upon request.

Offer: 14 Month Promo; $1,000 opening deposit required / $1,000,000 max.

Requirements

Product: Not available for individual retirement or business accounts. A penalty will be imposed on early withdrawals. For new customers, requires at least $500 new money. For existing customers, requires at least $500 of which $0.75 of every $1.00 is new money.

Offer: Balances under $100k. Requires $500 minimum new money deposit for new customers, or $0.75 per $1.00 new money for existing customers.

Requirements

Product: Variable rate based on WSJ Prime minus 2.75% with a floor rate of 1.00%. 24-month term share certificate. Deposits range from $1,000 minimum to $5,000,000 maximum. Dividends compounded and credited monthly. Early withdrawal penalty equal to 730 days of dividends. Membership required.

Offer: Variable rate based on WSJ Prime minus 2.75% with a floor rate of 1.00%. Rates up to 4.25% APY. Dividends compounded and credited monthly. Penalty equal to 730 days of dividends if withdrawn before maturity. Membership required.

Requirements

Product: Interest earned is payable by compounding, check, or transferring to an existing FirsTier account. A penalty may be imposed for early withdrawal. Automatically renews to a fixed rate CD of equivalent term.

Requirements

Product: Available for consumer accounts only. Membership required. Automatically renews at the rate offered upon renewal. Early withdrawal penalties apply. Standard term lengths range from 6 months to 60 months, but non-promotional terms require entering a ZIP code to view rates.

Offer: Limited time offer. Consumer accounts only. Membership required. Automatically renews at the rate offered upon renewal. Early withdrawal penalties apply.

Requirements

Product: Rate based on ZIP code 43215. Minimum opening deposit is $1,000. For accounts less than $100,000. Early withdrawal penalty applies. Not valid with other offers, no rate exceptions. Not available for brokers, agents, public entities, or financial institutions.

Offer: Promotional rate. Account balance less than $100,000. Early withdrawal penalty applies.

Requirements

Product: Minimum opening deposit $5,000, maximum $250,000. Must be funded via ACH transfer from an external bank account. Funds must be new money, not on deposit with First Citizens within the past 90 days. Must be opened by an individual residing in a state where a First Citizens branch exists. Not available as an IRA.

Offer: Earn up to 4.00% APY on a 5-month CD.

Requirements

Product: Minimum balance to open of $500. Not available for IRA or Retirement accounts. Early withdrawal penalties may apply. Fees could reduce earnings. Fixed rate.

Offer: Limited time offer. Not available for IRA or Retirement accounts. Early withdrawal penalties may apply. Fees could reduce earnings.

Requirements

Product: Minimum opening deposit is $1,000. Penalty may be imposed for early withdrawal. Maturities greater than one year pay interest at least annually.

Offer: 60 Month term. Penalty may be imposed for early withdrawal. Maturities greater than one year pay interest at least annually.

Requirements

Product: No early withdrawal penalty when withdrawing total balance and interest earned beginning 7 days after funds have been received. No withdrawals permitted during first 6 days following receipt of funds. No partial withdrawals allowed. Auto-renews to 3-month certificate. Membership eligibility and one-time $5 membership fee required at account opening.

Offer: Available with active Summit Dividend Checking account (0.25% relationship rate boost) opened or renewed on same membership account. Not available on HSA, ESA or IRA CD. Auto-renews to 3 months.

Requirements

Product: At maturity, automatically renews into a 3 Month Flexible CD at a lower interest rate unless changed during 7-day grace period. Online opening limit is $250,000.

Requirements

Product: Qualify for Relationship Rewards interest rates when paired with a Key Advantage Checking ® , Key Privilege Checking ® , Key Privilege Select Checking ® , Key Select Checking ® , Key Private Client ® Checking , Key Private Bank Checking ® , or Key Private Bank Personal Checking Account.

Offer: Promotional Rate accurate as of September 26, 2026, 12-month Tiered CD with Relationship Rewards up to $99,999.99. Minimum opening deposit $2,500. Compounded daily. Early withdrawal penalties may apply.

Requirements

Product: $500 minimum opening balance and minimum balance to earn APY. A penalty may be imposed for early withdrawal. Fees can reduce earnings. Fixed rate. Dividends compounded and credited monthly. Automatically renewable with a 10-day grace period.