Dec 5 (Reuters) - The European Commission and the European Central Bank published reports on Tuesday on the progress towards euro adoption of EU members yet to join the single currency. All euro candidates must spend at least two years in the ERM-2 currency regime to show their currencies are stable against the euro in a +/-15 percent band around a fixed parity. They also need to meet criteria on long-term interest rate convergence, inflation, public debt and budget deficits as a ratio to gross domestic product. Slovenia, due to adopt the euro on Jan. 1, 2007, is so far the only one of 10 countries that joined the EU in 2004 to secure euro zone membership. Following is a summary of the performance of three largest new EU members that have yet to join the ERM-2. FOR A FACTBOX ON PROGRESS OF ERM-2 MEMBERS PLEASE DOUBLE-CLICK ON [ID:nL05630391] CZECH REPUBLIC TARGET FOR EURO ADOPTION: The caretaker government abandoned its previous 2010 target and scrapped plans to join the ERM-2 in 2007. No new target set. EURO ZONE ENTRY CRITERIA: * Currency regime: free float with inflation targeting. * Public finances: The European Commission forecasts the deficit at 3.5 percent of GDP this year, 3.6 percent in 2007 and 3.2 percent in 2008. Joint Czech finance ministry and central bank forecasts are more pessimistic, predicting the deficit at 4.0 percent next year and 3.5 percent in 2008. The shortfall is forecast to reach the euro entry limit of 3.0 percent in 2009. The public debt is seen just above 30 percent of GDP in 2006-2009, about half of the EU's 60-percent benchmark. * Prices: The European Commission expects EU-norm inflation to creep up to 2.9 percent in 2008 from 2.5 percent this year. Czech forecasts see inflation at 2.5 percent in 2008 and 2009. They estimate the euro zone entry limit will stand at 3.0 percent over that period. BIGGEST CHALLENGE: Stalled healthcare and pension reforms because of political deadlock and increased social spending threaten budget targets. HUNGARY TARGET FOR EURO ADOPTION: The government has dropped its 2010 target, no new goal set. EURO ZONE ENTRY CRITERIA: * Currency regime: free float within +/-15 percent band. * Public finances: The European Commission forecasts the budget deficit will fall from record 10.1 percent of GDP this year to 7.4 percent in 2007 and 5.6 percent in 2008. Budapest is more optimistic, predicting the deficit will fall to 6.8 percent next year and 4.3 percent in 2008 and reach 2.7 percent in 2010. Public debt is seen exceeding 70 percent in 2007 and 2008. * Prices: The European Commission sees EU-norm inflation spiking up to 6.8 percent next year from 3.9 percent this year and returning to 3.9 percent in 2008. Budapest's forecasts are more optimistic with inflation seen at 3.3 percent in 2008. BIGGEST CHALLENGE: Implementing in full planned fiscal austerity measures to get runaway deficits under control again in the face of anti-government protests and unrest. Economists also say tax and regulated price increases should be complemented by more aggressive spending cuts. POLAND TARGET FOR EURO ADOPTION: No set target. The government says it wants to meet entry criteria in 2009 and possibly hold a referendum on the euro in 2010. EURO ZONE ENTRY CRITERIA: * Currency regime: free float with inflation targeting. * Public finances: Warsaw's convergence plan aims for a budget gap of 3.4 percent next year, 3.1 percent in 2007 and 2.9 percent in 2009. The European Commission forecasts the shortfall at 4.0 percent in 2007 and 3.9 percent in 2008. Public debt, as monitored by Brussels, is expected to hover just above 40 percent in 2006-2008. * Prices: The European Commission expects EU-norm inflation to reach 2.8 percent in 2008 climbing from 1.4 percent this year. The government, however, sees inflation capped at 2.5 percent until 2009. BIGGEST CHALLENGE: Deficit-cutting plans rely almost solely on strong economic growth, any slowdown would threaten the targets. ((Compiled by Tomasz Janowski; editing by David Christian-Edwards, Stephen Nisbet; Reuters Messaging: tomasz.janowski.reuters.com@reuters.net, tel. +48 22 653 9719)) Keywords: EUROZONE CONVERGENCE/OUTS