(Adds context on BOJ monetary policy)
* Firms prices to rise 0.8 pct a year from now - BOJ
* No change to firms' forecasts 3, 5 years ahead - BOJ
* Inflation expectations key to BOJ's stimulus program success
* Survey among factors BOJ will scrutinize at rate review
TOKYO, April 3 (Reuters) - Corporate Japan expects to see only minimal inflation in a year and barely any change in the next three to five years, a central bank survey showed on Tuesday, highlighting yet again the difficulty the Bank of Japan faces in reaching its elusive 2 percent inflation target.
Companies surveyed by the Bank of Japan expect consumer prices to have risen 0.8 percent a year from now, unchanged from their projection three months ago.
Firms also expect consumer prices to have risen by an annual 1.1 percent three years from now and 1.1 percent five years ahead, also unchanged from three months ago,
The BOJ deployed a massive stimulus program in 2013 in the hope of shocking consumers out of their deflationary mindset and boosting corporate and household inflation expectations.
After failing to make much headway on price growth, the BOJ revamped its policy framework in 2016 to one better suited to a long-term battle against deflation, although its results have been modest.
Japan's economy has expanded for eight quarters, the longest continuous expansion since a 12-quarter stretch of growth between April-June 1986 and January-March 1989 around the height of Japan's economic bubble.
But this record run of growth has been slow to translate into higher consumer prices.
The nationwide core consumer price index, which includes oil products but excludes volatile fresh food costs, rose 1.0 percent in February from a year earlier, matching the median estimate, data last week showed.
However, a narrower measure of consumer prices that excludes fresh food and energy rose an annual 0.5 percent in February, highlighting the snail's pace of underlying inflation.
The tankan surveys will be among factors for the BOJ board to scrutinize when it meets for a two-day rate review ending on April 27.
The meeting will be the first to include the BOJ's two new deputy governors. Prime Minister Shinzo Abe appointed Masazumi Wakatabe, an academic known as vocal advocate of aggressive monetary stimulus, to one of the posts.
Masayoshi Amamiya, a career central banker, was appointed two the second deputy governor post.
Governor Haruhiko Kuroda was reappointed, which suggests the BOJ will maintain policy continuity.
However, there is some uncertainty over whether Wakatabe's appointment will shift the policy board toward additional easing given the difficulty in meeting the central bank's price target.
The inflation expectations come after Monday's BOJ tankan survey of business confidence showed big manufacturers' sentiment worsened for the first time in two years on worries about a rising yen and trade friction with the United States.
(Reporting by Stanley White Editing by Eric Meijer)