Financial markets have priced in an even chance of the Bank of England leaving interest rates on hold at 5.25% today.
Previously, an 80% chance had been assigned to a 0.25 percentage point increase.
The change comes after a surprise fall in consumer price index inflation to 6.7% in August from 6.8% in July.
Economists now predict that inflation is set to fall below 5% by December, putting the prime minister on course to achieve his pledge of halving the rate.
The City and Bank of England had thought the rate of price growth would have risen to about 7% last month, led by higher fuel costs, but an unseasonal easing in hotel prices pushed the rate lower.
