* Iceland holds referendum on debt to Britain, Netherlands
* Two new polls show agreement will be rejected
* Solving issue seen key for long-term economic health
By Omar Valdimarsson and Anna Ringstrom
REYKJAVIK/STOCKHOLM, April 7 (Reuters) - Icelanders look set to reject a deal to repay Britain and the Netherlands for debts from a bank crash, denting government hopes to draw a line under its financial crisis and speed economic recovery.
A referendum will be held on Saturday on an agreement to repay the $5 billion debt, run up after the British and Dutch governments repaid depositors who had money in an online account called Icesave. The account was run by one of the three Icelandic banks which collapsed in late 2008.
On Thursday, one poll showed 57 percent and another 55 percent against the new deal, which the government says is better than one they rejected in March 2010. The readings came after weeks of polls showing support for the deal.
A "no" vote would be a blow for the centre-left coalition, which managed Iceland out of the depths of its financial crisis but it has not said it will resign if so.
"A 'no' vote is a recipe for uncertainty for at least the next one to two years," Prime Minister Johanna Sigurdardottir said on Thursday. "We would have to review and possibly revise the current economic programme."
Many Icelanders say they are angry that taxpayers have to bail out irresponsible banks.
"Last week I had settled on a yes but now I'm going to vote against," said Bragi Baldvinsson, a 42-year-old aero-engineer.
"People here have lost massive amounts of money. That's tough luck -- and tough luck also for the Icesave depositors in Britain and the Netherlands."
Hjalti Gudmundsson, 45, said he planned to vote "yes".
"The overriding factor is the need to be on good terms with our neighbours and the outside world. We should settle our differences through negotiation, not through the courts."
If Icelanders turn down the new Icesave deal, the dispute may instead be solved in a European court, a solution some economists say would be much costlier.
The referendum, in which 230,000 voters can take part, begins at 0800 GMT and ends at 2200 GMT.
ECONOMIC REHABILITATION
The government and economists say solving the Icesave issue will help Iceland get back into financial markets to fund itself after a financial rescue programme, led by the International Monetary Fund, runs out this year.
It will also help the country of 320,000 people remove the controls on capital flows it imposed to stop its currency from falling further.
The controls have left an estimated 465 billion crowns ($4.10 billion), equivalent to one-fourth of the island's output, in foreign hands, some of which wants to escape.
"The protracted dispute over Icesave has complicated many aspects of Iceland's recovery and economic rehabilitation," said Paul Rawkins, an analyst at ratings agency Fitch.
Foreign investment has been delayed for example, he said.
A "yes" vote would show the world Iceland wants to normalise relations with international creditors and could set the stage for credit rating improvements, he said.
"If it remains a 'no', it could stall the resolution of capital controls and leave Iceland where it's been for the last 18 months or so, which is sort of caught in a state of limbo."
Iceland last month outlined a cautious plan to gradually relax the capital controls, a process expected to take years. The main steps will only take place once Iceland has showed it can refinance loans in foreign credit markets. (editing by Elizabeth Piper)