Every year, British women spend 33 hours each preparing for Christmas - amounting to three months over the course of a lifetime.
This is about a third more than the average man, according to the study commissioned by Scottish Widows.
In total, the value of the time spent by women on festive efforts amounts to about £20,000, using the ONS unpaid work calculator.
Other findings revealed by the research included the top seasonal frustrations: cleaning the house (75%), food prep (69%), long queues in shops (43%) and time spent waiting for deliveries (41%).
Catherine Stewart, of Scottish Widows, said: "Both men and women invest a lot of time getting ready for Christmas but it's clear from our research that women bear the load during the festive season.
"It's important that we share the preparations equally this December.
"Whoever spends the most time getting the family ready for Christmas should be treated to a 'festive feet up' - even if it's just one hour, it can make all the difference."
The survey also suggested two-thirds of Brits would pay someone else to do tasks for them, including wrapping presents and standing in line.
It involved a nationally representative sample of 2,000 adults and was carried out by Opinium.