Capital One Financial Corp. could record $1.1 billion in additional losses on future mortgage buyback claims, the card-issuer-turned-bank warned in a Tuesday filing with the Securities and Exchange Commission.

In the filing, the company said there is still "significant uncertainty as to numerous factors that contribute to ultimate liability levels," which include litigation outcomes, future repurchase claim levels, ultimate repurchase success rates and mortgage loan performance levels.

Capital One said it was possible the actual future losses "will exceed both the current accrual level and the amount of reasonably possible losses estimated" by the company.

In January, Capital One reported its fourth-quarter profit climbed 85% as loan-loss provisions shrunk from a year before, while the company's revenue decline was less than estimated. Capital One and its industry have seen financial results improve of late, with earnings returning last year as credit-loss provisions slowed and delinquency rates eased.

Shares of Capital One were up 0.8% to $48.65 in after-hours trading.

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