The National Bank of Hungary (NBH) expects inflation to drop soon, partly due to sluggish growth in the euro zone, the country's main trading partner.

But headline inflation reached 3.9%, near the top of the NBH's 2-4% target range, in April and the economy was the European Union's fastest growing in the first quarter at 5.3%.

"Domestic demand is strong and will remain strong next year," said K&H Bank analyst David Nemeth. "Inflation pressure is present and will be present. Inflation is above 3 percent, so the central bank will need kind of an adjustment."

All 19 analysts polled from May 20-22 said the bank would hold its base rate at 0.9%, the lowest in the region, on Tuesday.

The median forecast was for the rate to remain at that level for the rest of 2019, then rising to 1.2% next year and 1.4% in 2021.

But the survey projected a gradual rise in the 3-month BUBOR interbank rate over the coming year, to 0.67% from 0.2%.

The 14 analysts who also gave a forecast for the overnight deposit rate all said that would stay at -0.05% on Tuesday. The poll projected it would nudge up to 0.05% by the end of this year and rise further in 2020 and 2021.

The bank hiked the overnight deposit rate by 10 basis points in March, also announcing a cut in the liquidity it provides to markets via its currency swap tool.

But it called the move a one-off, and said it would make future monetary decisions based on quarterly inflation reports. The next such report is due in June.

The median poll forecasts put inflation at 3.65% in December, 3.2% at the end of 2020, and 3% in the last month of 2021.

Asked to rank the factors the NBH takes into account in its decision-making, the analysts attributed 41% weight to domestic inflation trends, 25% to the European Central Bank's policy outlook and 15% to the forint's exchange rate.

Hungary's currency has hit 9-month lows against the euro in recent days due to the rising inflation and the worsening impact on emerging markets of the U.S.-China trade war.

(Reporting by Sandor Peto; editing by John Stonestreet)

By Sandor Peto