BRATISLAVA, Jan 12 (Reuters) - Slovak consumer prices were flat month-on-month in December, putting the annual inflation rate at 4.2 percent, the Statistics Office said on Friday. KEY POINTS: SLOVAK HEADLINE CPI DEC 06 NOV 06 DEC forecast pct change mo/mo 0.0 +0.6 +0.1 pct change yr/yr +4.2 +4.3 +4.3 (Details of Dec inflation data ............... [ID:nPRG000198]) - Analysts surveyed by Reuters had expected consumer prices to have risen by 0.1 percent on the month, for an annual rate of 4.3 percent in December. - The core inflation rate, which excludes the impact of changes to state-regulated prices and excise taxes, was forecast at 0.1 percent month-on-month and at 2.9 percent on an annual basis. - Prices of food and non-alcoholic beverages rise by 0.2 percent on the month in December, down from 0.7 percent in November. - Housing, water, electricity, gas and other fuels, which have the strongest weighting in the consumer basket, are flat in December, after a 1.6 percent rise in the previous month. - Transportation prices, influenced mainly by oil costs, fall by 0.5 percent on the month in December, after a 0.7 percent drop in November. COMMENTARY: SILVIA CECHOVICOVA, ANALYST, CSOB BANK, BRATISLAVA "Inflation was slightly better than expected, but it is no big surprise. I think the data will have a neutral impact on monetary policy. Rates will stay unchanged, and the inflation outlook is favourable. The annual inflation rate is expected to fall to near 3 percent in January because of the base effect." MARKET REACTION: The crown showed no immediate reaction to inflation data, trading flat at 34.520 to the euro as of 0805 GMT. BACKGROUND: - Inflation data were calculated according to domestic methodology. - The central bank more closely follows inflation calculated under the EU-harmonised consumer price index, but the market pays attention to local data as they signal trends with shop prices. - The Statistics Office will release EU norm inflation data for December on Jan. 17. - The central bank sets its inflation targets according to EU norm data as part of Slovakia's preparation for joining the euro in 2009. - Slovak inflation accelerated in 2005 and 2006 due to hikes in natural gas and heating prices. - The central bank raised the key two-week repo rate by 175 basis points in 2006 to fend off inflation risks stemming from high energy prices and fast economic growth. - A Reuters poll earlier this week showed all analysts expecting the two-week repo to stay unchanged at 4.75 percent in January. LINKS: - For further details on December inflation and other past data, Reuters 3000 Xtra users can click on the Slovak Statistics Office's website: http://wwww.statistics.sk/webdata/english/index2_a.htm - For LIVE Slovak economic data releases, click on...... - Schedule of upcoming indicator releases............ - Summary of short-term economic data forecasts...... - Stories on Slovak currency moves........................[SKK/] - Slovak speed money guide .............................. - Slovak benchmark state bond prices ................. - Slovak forward money market rates ....................