Onyx Mastercard®

Advertiser Disclosure Editorial Disclosure

Last updated on December 6th, 2021

Onyx Mastercard®

Onyx Mastercard®
  • Regular Purchase APR 9.50% to 17.50% variable based on creditworthiness and the Prime Rate
  • Balance Transfer APR 9.50% to 17.50% variable based on creditworthiness and the Prime Rate
  • Cash Advance APR 17.50% variable based on the Prime Rate
  • Annual Fee None
  • Credit NeededBestCards.com uses a variation of FICO Score 8, which is one of many different types of credit scores. A financial institution may use a different score when deciding whether to approve you for a credit card.
    Excellent
  • Intro Purchase APR 0% for 6 months
  • Processing Network Mastercard
Best Benefits
  • No annual fee
  • No foreign transaction fees
  • No fees for balance transfers or cash advances
  • Earn 2% on all eligible purchases
Rates & Fees
  • Intro Purchase APR: 0% for 6 months
  • Regular Purchase APR: 9.50% to 17.50% variable based on creditworthiness and the Prime Rate
  • Intro Balance Transfer APR: 0% for 12 months
  • Balance Transfer APR: 9.50% to 17.50% variable based on creditworthiness and the Prime Rate
  • Cash Advance APR: 17.50% variable based on the Prime Rate
  • Late Payment Penalty Fee: Up to $25
  • Return Payment Penalty Fee: Up to $25
Credit Card Deals

Browse these credit card deals and thousands of other offers by becoming a Bestcards Member.

Join today!

At a Glance

Earn 2% cash back rewards and enjoy no hidden fees with the impressive Onyx Mastercard® from Texas Dow Employees Credit Union. The no annual fee card offers big credit limits, an even bigger rewards cap, and more.

Ideal for Those Who:

  • Are a current member of TDECU or qualify for membership
  • Have excellent credit
  • Want a versatile rewards card that also doubles as a balance transfer credit card
  • Don’t want to pay an annual fee

Onyx Mastercard® Review

The Onyx Mastercard® from Texas Dow Employees Credit Union (TDECU) offers exceptional cash back and no hidden fees with a $0 annual fee.

Earn Unlimited 2% Cash Back

The main headline with TDECU’s Onyx Mastercard® is the ability to earn 2% cash back on all eligible purchases. That cash back rate is on par with the very best cash back cards on the market, with the only notable exception being Alliant’s Cashback Visa Signature which earns 2.5% back after meeting minimum Alliant high-yield checking account balance minimums.

While Alliant CU offers more cash back, it comes with a caveat, something not found with the TDECU Onyx Card. Instead, cardholders get the satisfaction of earning double cash back on regular purchases without any confusing fine print. This, in turn, places the card on par with other 2% cash back options, including the Citi Double Cash, Wells Fargo Active Cash, and TD Double Up Cards.  

While the Onyx offers 2% back on all eligible purchases, it’s important to remember what purchases are not eligible for cash back rewards. Ineligible purchases with the card include:

Cash advances

Balance transfers

ATM disbursements

Money orders

Gambling purchases

Tax payments and other finance charges

Cash back rewards with the TDECU Onyx apply to the first $500,000 in annual spending, with a cap of $10,000 cash back rewards every year.

How to Redeem Cash Back Rewards with TDECU

Rewards with the Onyx Card automatically apply to the account during October each year. The accumulation period begins the day the account holder receives their TDECU Onyx Card through September 30th of the same year.

Cash back rewards with TDECU expire as soon as the account is voluntarily closed. Additionally, rewards may not post to the account if the Onyx cardholder’s account is delinquent or not in good standing.

O% Intro APR

Beyond impressive rewards, the Onyx Card also provides the ideal platform for financing a large purchase or paying down an existing balance. The card features two introductory APR periods, one on purchases and the other on transfers.

The card offers 0% APR for six months on purchases, which, while not exceptional, provides some value. The same cannot be said for the 0% APR on balance transfers that runs for 12 months. That period provides an excellent platform for paying down balances – particularly given the exceptionally low rates the card typically charges.

An Impressive APR Every Day

Credit union credit cards feature some of the most competitive interest rates on the market today – and the Onyx Mastercard® certainly fits that billing. Interest rates with the card start as low as 9.5% – significantly below the average APR for a cash back credit card (currently around 16%) and even other low-rate credit union cards (currently around 11%).

The rate is excellent even at the higher end of the interest rate spectrum, never topping more than 18%. This, of course, makes sense as the Onyx Mastercard is geared towards applicants with an excellent credit history.

No Hidden Fees of Any Kind

Solid cash back rewards and exceptional APRs are one thing, but the Onyx Mastercard® from TDECU takes things a step further with the lack of any penalty fees. There are no annual fees, maintenance fees, or foreign transaction fees, for example. Additionally, the card charges no fees for cash advances or balance transfers – a rarity for a card offering so much.

Other Card Features

Other notable features of the Onyx Mastercard® from Texas Dow Employees Credit Union include:

  • Worldwide acceptance and ATM access
  • Mastercard Zero Fraud Liability
  • Mastercard ID Theft Protection
  • Baggage Delay Insurance
  • $100,000 Travel Accident Insurance
  • Mastercard® global services
  • 25-day grace period

Should You Apply for the TDECU Onyx Mastercard®?

The Onyx Mastercard® is certainly impressive, but is it right for you? First, you’ll need to be able to qualify for TDECU membership. That membership is restricted to residents of 30 Texas counties, family members of current residents, or employees or members of TDECU affiliated companies or organizations.

Qualified members will also need excellent credit and a penchant for spending. Like the Alliant Cashback Visa Signature, the Onyx Card is designed with high spenders in mind. TDECU reports that Onyx cardholders spend $56,000 per year on the card, which is huge for most.

Finally, potential applicants need excellent credit. According to reports, TDECU requires a minimum FICO score of 720 to qualify for the card, far higher than the credit requirements of many of the other card offerings from the CU.

Meet all these requirements? If so, then the Onyx Mastercard® is a hugely impressive cash back rewards credit card that provides rewards-earning, low rate saving, and absolutely no hidden fees in one unique package.

Browse Other Card Offers:

Subscribe To Our Weekly Newsletter

Get email updates on the latest credit card articles and news so you can stay on top of your financial wellbeing.