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The highest limits often come with elite top-tier cards, typically aimed at applicants with very good to excellent credit. In general, the higher your credit score, the higher the credit limit you can get. Every issuer has its own process, but in general, you can expect banks to look at your income, debt, debt-to-income ratio, credit history, and credit score, as well as your income and employment history.

The final credit limit is determined based on your creditworthiness on the issuer's side at the time you apply. Although PenFed Credit Union does not disclose credit limits for its cards, the minimum credit limit for the might be around $5,000-$10,000 since it's a Visa Signature card, but cardholders report maximums of $50,000.

In case you don't get approved for the credit limit you want, you can try to request a higher credit limit right after approval. It will require calling the issuer or visiting a local office.

Clearly state the specific credit limit you are requesting. This amount should be realistic and reasonable based on your financial situation and needs. Provide convincing arguments to justify the feasibility of the requested credit limit.