A study by the Banker magazine revealed that the British taxpayer will earn the money over the course of the next five years.
As much as Â£19 billion could be made from the value of the stock increasing while a total of Â£8 billion may be generated through fees, loans and the asset protection scheme.
Brian Caplen, editor of the magazine, said: "While the banks remain at fault for decisions that led to some of them needing a rescue package, the UK taxpayer could make a significant profit from bailing out the banks by 2015.â
Forecasts made at the time suggested that investing tax payer money into propping up the financial system could lose them as much as Â£850 million in the long-term.
The UK taxpayer currently owns a 41 per cent share in Lloyds and a 83 stake per cent in RBS.
By Jim Ottewill