IRAQ: The United Nations and the World Bank estimate it will take $36 billion (30.5 billion) to rebuild Iraq but have not said how much needs to be raised in Madrid.
Following are details of some of the main contributions made or pledged so far by countries and organisations:
UK - Britain will contribute £296 million ($495.7 million) for the period to March 2006 (£29 million of which is its share of currently proposed EU spending). That will bring a total financial commitment of £544 million ($911 million) for the three years from April 2003, including funding provided so far.
EUROPEAN UNION - The European Commission's offer of 200 million ($235 million) for 2004 has been criticised by EU law-makers as too little, but Mr Chris Patten, the EU's external relations commissioner, said EU reconstruction and humanitarian assistance to Iraq together totalled over €1.4 billion ($1.65 billion).
GERMANY - A German Foreign Ministry spokesman said Berlin was giving more than 100 million to Iraq, about 50 million of that through the EU.
JAPAN - Tokyo said it would provide $1.5 billion in grants in the near term, targeting areas such as electricity, education, water and employment, and would help rebuild infrastructure and improve security. The donation would make Japan the biggest single national donor to Iraq so far, after the US.
SOUTH KOREA - South Korean technology companies are gearing up for reconstruction projects in Iraq, encouraged by signs that Seoul appears to be tilting towards sending more troops to the country.
SPAIN - Madrid has pledged $300 million in economic aid to Iraq to 2007.
SWEDEN - Usually a major aid donor, Sweden said it would offer only humanitarian assistance until there was either a sovereign Iraqi government or UN authority overseeing reconstruction. The government said it would give 250 million crowns ($32.59 million) in 2004-2005, on top of the 95 million crowns granted earlier this year.
UNITED STATES - Washington has already pledged to contribute $20 billion toward rebuilding Iraq over 18 months. The White House expects to channel some $5 billion a year of Iraqi oil revenues into reconstruction, starting in 2005.
WORLD BANK - In a meeting of its shareholders, the bank agreed to offer Iraq between $3 billion and $5 billion in loans over the next five years.