The announcement, made at midday, means that the base rate has been unchanged for a record of nearly 5.5 years.
The last time a change was made was March 2009.
{desktop}{/desktop}{mobile}{/mobile}
In August two of the nine committee members, who decide on the rate, wanted to raise it by 0.25%.
Ian McCafferty and Martin Weale voted against keeping the rate the same and called for the increase.
But the rest of the committee opted to maintain it at 0.5%.
Governor Mark Carney and other senior bank figures have hinted recently that a small rise in the near future could be possible as the economy continues to recover although any increases are expected to be small and gradual.
Some experts have forecast that the bank base rate could eventually rise to more historic norms, perhaps in the range of 2.5% to 5%.