Cilla Black left £15 million to her sons in her will.
According to The Sun, the late TV presenter's children, Robert, 45, Ben, 41, and Jack, 35, will have to pay almost £6 million in inheritance tax leaving then with roughly £3 million each.
Cilla also reportedly bequeathed £20,000 to her housekeeper Penny Walker.
A source told the newspaper: "She adored her sons and treated Penny as part of the family."
Cilla also has a £2million villa in Spain and £1.5million penthouse in Barbados which have not been included in her UK estate.
Cilla passed away in August following a fall at her home in Spain and her son Robert recently said that his 72-year-old mother had been in high spirits before her death.
Speaking in the documentary 'Our Cilla', he said: "During the last two years she began to suffer fairly standard things that people as they get older would suffer.
"Her hearing had started to go, so she had to start wearing hearing aids. Typical of my mum, she wouldn't wear them.
"She was sitting around having a glass of champagne killing herself laughing at 'Jeremy Kyle' - without the hearing aids obviously - so blaring out across Marbella.
"We hung out and at about one o'clock, I said I was going to do a shop. I said goodbye and that was the last time I saw her."
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