SonitaNijhawanwas discovered in a pool of blood in her family estate in Surrey, south England, in May this year.
Her husband Sanjay Nijhawan is accused of killing her with as many as 124 blows from an axe.
Prosecutor Sally O'Neill told the jury at Guildford Crown Court in Surrey this week that the 46-year-old former banker with Barclays hit his wife on the head and neck before slitting her throat, 'The Times' said in a court report.
"He (Mr Nijhawan) was sitting on the kitchen floor next to her body repeatedly stabbing himself to the legs with a small knife.
"Sonita had 124 significant injuries to her body including 40 cut and blunt force injuries to her head, of which 18 were to the back of the head, 11 to the side and 10 to the left-hand side of her skull. These were all likely to be caused by an axe."
The stab wounds cut her carotid and jugular blood vessels and the cuts on her thighs were up to 9 cm deep.
The court was told that after he was arrested, Sanjay Nijhawan told officers that he had become "deranged" and had suffered a nervous breakdown.
He had reportedly quit his job with Barclays Capital Wealth after suffering from depression and anxiety and got further upset when his wife sought a divorce.
Nijhawan had also grown increasingly anxious about his 670,000 pound mortgage on the couple's 2.6-million pound home in Surrey.
The victim's younger brother, Amit Parkesh, said: "They appeared very happy and I'm sure they were both very much in love. I had never seen them argue or be in anyway violent towards each other. Prior to this, I would have said Sanjay would not hurt a fly. He is a lovely guy."
The couple's four-year-old son was reportedly in the home during the murder and alarmed family members rushed to the home after receiving some bizarre phone calls and text messages from the accused.
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