The limit on storing eggs and sperm will be increased to 55 years under a government plan that ministers say will give people more time to decide when to start a family in the UK.
Health Minister Sajid Javid said the current 10-year limit was "strict."
The modern method of freezing means that eggs can be stored indefinitely to prevent spoilage, a study by the British Reproductive Institute has suggested.
The plan needs to be approved by parliament.
Now, at the end of 10 years, parents are expected to decide if they will undergo fertility treatment or the cells will be discarded.
Under the new system, they will be given the option to place or dispose of stored cells or embryos for a period of 10 years.
Mr. Javid said: "The new law will help alleviate the fear of time running out of ideas."
He added: "By making these changes, we will take a big step towards - not only giving people freedom about their parenting, but also equality."
The chairman of the British Reproductive Society Dr. Raj Mathur has welcomed the initiative.
He said the extension of the time limit "protects the ability of all patients to make their own parenting decisions as individuals and partners."
What is the freezing of an egg, sperm, and fetus?
It is a method of sterilization by collecting eggs, sperm, or embryos so that the prospective parent can have a baby the next day.
The process involves collecting 15 eggs through the IVF system, freezing them, and then storing them in a special nitrogen-containing tank.
The eggs will then be used when needed, but only those that will survive will be fertilized by sperm.
Samples of normal sperm are divided into several containers known as tubes before freezing so that they can be used in different treatments.
The fetuses freeze during contraception if the first phase fails and you can try again.
They can freeze as a single cell, in two to eight cells or later in the growth stage.
