Goldman Sachs is likely to unveil details of multi-million pound bonuses to staff next week, a person familiar with the matter said on Tuesday, after a delay as the row over payouts heats up.

Goldman had been expected to give staff the outline of their bonuses on Monday, in line with previous years when bankers are told a couple of days before full-year results.

Staff, however, were not told in advance this year, but will hear next week, the source said. The investment bank is due to announce results on Thursday.

The introduction of a controversial 50 percent tax on bonuses in Britain and moves by France, the United States and other countries to prevent banks making hefty payouts soon after being bailed out by taxpayers are issues affecting compensation this year, while Goldman has also shifted to a calendar year for the first time.

Deutsche Bank said on Tuesday it was raising fixed salaries for staff and cutting variable pay to keep remuneration competitive amid the clampdown on bonuses.

The Daily Telegraph newspaper said the Financial Services Authority, Britain's financial regulator, had taken issue with Goldman's bonus plans, effectively blocking them.

The FSA and Goldman declined to comment.

The regulator has in the past blocked awards due to issues with the structure of compensation, but not the level of pay.

In addition to a 50 percent tax on any bonuses introduced in Britain, the regulator has imposed tough pay rules across the sector.

Goldman set aside nearly $17 billion in the first nine months of 2009 and may award over $20 billion to staff for the full year, sparking outrage from some critics.

(Reporting by Steve Slater and Clara Ferreira-Marques; Editing by Jon Loades-Carter)