Lloyds Banking Group has set aside another £1 billion to meet compensation claims for the mis-selling of payment protection insurance (PPI).
The part state-owned lender is by far the worst affected by the PPI scandal, and on Wednesday said as part of a third quarter trading update that its total compensation bill has reached £17 billion.
The banking industry's PPI bill already stands at more than £30 billion.
Earlier this year the Financial Conduct Authority (FCA) moved to put a June 2019 deadline on claims in an effort to draw a line under what has been one of the biggest banking scandals in history.
The extra PPI provision meant that statutory pre-tax profits came in 15% below last year at £811 million in the quarter.
Underlying profit for the third quarter came in 3% down at just under £2 billion.
Results also show a pension hit following the Brexit vote, which comes as company schemes are hammered by falling bond yields.
The bank's schemes moved from a net surplus of £430 million to a net deficit of £740 million in the quarter.
George Culmer, the chief financial officer, said the PPI provision takes the bank through to 2019 and the FCA deadline.
On Brexit, chief executive Antonio Horta-Osorio said that there has been "no significant" drop in consumer activity following the referendum result.
"We don't see any change in consumer trends. But on the business side, SMEs (small and medium-sized enterprises) and mid-size corporates, there has been some impact on businesses holding back on investment.
"The British economy is in a very strong position facing Brexit. But uncertainty will persist and the economy requires fiscal stimulus in infrastructure and house building," he said.
The chief executive also moved to quash speculation surrounding his potential departure from the bank following revelations about his private life earlier in the year.
"I'm very happy at Lloyds. I like the bank, I like the team, I like the strategy," Mr Horta-Osorio added.
In its results, Lloyds also said it has accounted for a further £150 million provision to cover other conduct issues, including £100 million relating to packaged bank accounts.
The figures come after Chancellor Philip Hammond ditched plans for a Lloyds share sale to the public earlier this month, instead planning to offload the Government's remaining 9% stake to institutional investors.
In July, Mr Horta-Osorio announced that Lloyds was cutting 3,000 jobs and shutting 200 branches as part of an efficiency drive.
Shares in Lloyds dipped 3% in morning trading to 53.6p as investors baulked at the trading update.
Neil Wilson, markets analyst at ETX capital, said: "Investors have cooled on Lloyds of late and these results won't make them love it any more.
"The share price is well shy of the 89p hit in May last year and chief executive Antonio Horta-Osorio has to be feeling the pressure just a tad.
"It's not just PPI - Lloyds is hugely exposed to the UK economy and there is a worry post-Brexit that this will crimp earnings going forward. Lower interest rates aren't helping either."