Britain's supermarket groups have seen sales soar during the pandemic, but have been criticised by lawmakers and media for paying shareholder dividends while receiving tax relief.
However, on Wednesday, market leader Tesco said it would repay the 585 million pounds it had claimed because some of the risks of the crisis were now behind it, and returning the money was "the right thing to do".
That stance put pressure on rivals to do the same.
Morrisons followed, saying it would pay 274 million pounds.
Sainsbury's said it had performed ahead of expectations, particularly since the start of the second national lockdown in England last month.
"With regional restrictions likely to remain in place for some time, we believe it is now fair and right to forgo the business rates relief," CEO Simon Roberts said.
Asda WMT.N CEO Roger Burnley said the group recognised there were other industries for whom the effects of COVID-19 would be much more long lasting.
Tesco CEO Ken Murphy denied its decision to pay was a calculated one to damage competitors who do not share its financial strength.
"When we made the decision, we didn't really think about the competition at all," he told Sky News.
Murphy also said the move was unconnected to Tesco's plan to pay shareholders a 5 billion pound special dividend when the sale of its Asian business was completed.
PRESSURE ON OTHERS
Analysts said the pressure was now on other food retailers to also forgo the relief.
Discounters Lidl and B&M declined to comment.
The Co-operative Group said it plans to review its position at year-end. M&S and Waitrose owner, the John Lewis Partnership, have said they will not forgo it.
A spokesman for British Prime Minister Boris Johnson told reporters the government welcomed any decision to repay support "where it is no longer needed".
Taking account of the business rates it will now pay, Sainsbury's forecast underlying pretax profit of at least 270 million pounds in its 2020-21 year, and over 586 million pounds in 2021-22.
It will prioritise dividend payments to shareholders over cutting debt in 2020-21, which will push back its timetable for debt reduction.
Shares in Sainsbury's were up 4.1% at 1308 GMT. Morrisons was down 0.3% and Tesco was up 1%.
Sainsbury's also repeated its call for the government to review the business rates system to create a more level playing field between physical and online retailers. ($1 = 0.7435 pounds)
(Reporting by James Davey; additional reporting by Liz Piper; Editing by John Stonestreet and Mark Potter) ((firstname.lastname@example.org))