Asian shares edged up on Tuesday, on track for a winning month and bolstered by gains on Wall Street as investors awaited a speech by US President Donald Trump for signals on tax reform and infrastructure spending.

MSCI's broadest index of Asia-Pacific shares outside Japan was up 0.2 per cent, up 3.6 per cent this month nearly 10 per cent for the year so far.

Australia's S&P/ASX 200 index was up 0.4 per cent as financial shares gained, while China's Shanghai Composite Index added 0.3 per cent.

Japan's Nikkei stock index got a tailwind from a weaker yen and rose 0.8 percent, on track to gain more than 1 per cent for February and 0.7 per cent for the year to date.

“Investors have seen the market fluctuating between hopes and disappointment about Trump's growth policy and a lack of details,” said Isao Kubo, equity strategist at Nissay Asset Management in Tokyo.

On Monday, U.S. stocks edged up, with the Dow Jones Industrial Average closing at a record high for a 12th straight session, after Trump said he would talk about his plans for “big” infrastructure spending in his first major policy address to Congress on Tuesday (9 pm ET Feb 28/0200 GMT on March 1).

“This could be like the case of his inauguration speech, in which expectations were high, but he didn't come up with any concrete details,” said Ayako Sera, market strategist at Sumitomo Mitsui Trust Bank.

“The market does not want a repeat of that, and wants to hear some actual plans, or there will be disappointment,” she said.

Treasury Secretary Steven Mnuchin said in a televised interview on Sunday that Trump will use the event to preview some elements of his sweeping tax reform plans.

Trump will seek to boost Pentagon spending by $54 billion in his first budget proposal and slash the same amount from non-defense spending, including a large reduction in foreign aid, a White House budget official said.

The dollar edged down 0.1 per cent to 112.62 yen but still held above Monday's nadir of 111.920, which was its lowest since February 9. The euro was steady on the day at $1.0586.

Hawkish comments from a US Federal Reserve official also bolstered U.S. Treasury yields and underpinned the dollar.

Dallas Fed President Robert Kaplan said on Monday that the Fed might need to raise interest rates in the near future to avoid falling behind the curve on inflation.

The yield on benchmark 10-year US Treasuries, which had slumped to more than five-week lows last week, stood at 2.370 per cent in Asian trade, compared to their US close of 2.367 per cent on Monday.

Crude oil prices were largely steady, as expectations of higher US crude production offset reports of high compliance with OPEC's production cut agreement.

US crude was up 0.2 per cent on the day at $54.18 per barrel, while Brent crude added 0.3 per cent to $56.10.

Spot gold edged up slightly to $1,253.06 an ounce but remained shy of a 3-1/2-month peak scaled on Monday as investors awaited Trump's speech.

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