PRAGUE, Sept 26 (Reuters) - The Czech Republic has seen a sharp worsening of its budget outlook since the lower house election in June, and lasting political instability has thrown doubt on the fate of the 2007 budget draft. The budget troubles, blamed by the new rightist minority cabinet on the previous leftist administration, have most likely buried the previous leftist government's plan to adopt the euro in 2010. The government approved the central 2007 state budget draft on Monday but still needs to find support for it in parliament. The following are basic facts about the budgetary process and what happens if no budget is approved. BUDGET BASICS * Central state budget approved by cabinet on Monday sees revenues of 966.7 billion crowns, expenditure of 1,058 billion and deficit of 91.3 billion ($4.08 billion). * The budget includes 31 billion crown income from privatisation, and also expects 27 billion in extra revenue and savings being debated by parliament. * The law on the state budget as such includes only central government operations. * However, the key indicator is overall public sector balance under the EU's ESA 95 rules which also includes various off-budget funds, the public health insurance system and local budgets. It strips off one-off income such as privatisation revenues. * The Finance Ministry predicts a 2007 fiscal gap, under the EU's ESA 95 rules, at 4.0 percent of gross domestic product, far above the original 3.3 percent target. * Upper house, the Senate, does not vote on the budget. TIMELINE AND PROCESS * Government must submit a budget to the lower house of parliament by the end of September. * The lower house discusses budget in three readings. The first reading locks in overall revenue and expenditure. * Rejection in first reading means the government must submit new draft 20-30 days after the rejection. * After the first reading, house committees discuss individual parts for at least 30 days. * Budget committee adopts recommendations on changes proposed by other committees. * The second reading in the house discusses the proposed changes. * In the third reading, the lower house votes on individual proposed changes and then on the overall bill. PROVISIONAL BUDGET * Provisional budget comes in when there is no approved budget in place by January 1. * The basic outline of the provisional budget is that volume of revenue and spending is the same as in the previous year. * Funding to individual departments s released monthly at a rate of 1/12th of the previous year's totals. * Spending can rise above previous year's levels in cases where another law mandates higher expenditure. This can be the case of welfare and other spending. * Spending can also rise above previous year's level where it is funded by own EU revenue -- from value added tax or based on GDP. (To see 'ANALYSIS-Eyes on polls, Czech govt makes little in savings' please click on [ID:nL26473315]) ((Reporting by Jan Lopatka, editing by Ron Askew; prague.newsroom@reuters.com; Reuters Messaging: jan.lopatka.reuters.com@reuters.net; +420-224 190 474)) ($1=22.38 Czech Crown) Keywords: ECONOMY CZECH BUDGET