Policymakers continue to talk up the prospects of pushing inflation back towards its 2 percent target, but many economists expect the BOJ to ease again sometime this year, as weak oil pushes prices down.
Perhaps more intriguing is a Turkish central bank meeting, also on Tuesday. It has been in rate-cutting mode but found its efforts attacked by President Tayyip Erdogan, who has demanded more dramatic action even though inflation is high.
The lira, already under pressure from the strong dollar, has tumbled sharply as investors question the independence of the central bank and the position of its head, Erdem Basci.
Basci and Erdogan met last week to iron out their differences and may have secured a truce if not a meeting of minds. Erdogan has previously denounced defenders of high interest rates as "traitors", suggesting the chances of forging any common understanding are slim.
The Swiss National Bank holds its first policy meeting since it shocked financial markets in January by scrapping a three-year-old cap on the Swiss franc against the euro.
It is expected to keep its benchmark interest rate below zero until at least 2016 and is likely to lower growth forecasts for this year, according to a Reuters poll.
Norway is forecast to cut interest rates by a quarter point to 1 percent as its oil sector looks at an uncertain future.
House prices are rising fast, however, so a further loosening of monetary policy could risk inflating an asset bubble. The government has already asked the financial regulator for measures to put a lid on property prices.
Away from the central banking world, Britain's last annual budget before a national election in May will be a big political and economic moment.
With growth solid and public finances starting to surprise on the upside, finance minister George Osborne has scope for vote-winning giveaways. But that would run counter to his mantra of more austerity to come to put the UK back on track.
Osborne has talked about a cost-neutral budget, which may leave him some room for largesse.