Angela Rayner is expected to be interviewed under caution as part of Greater Manchester Police’s probe into the sale of her council house in 2015, according to reports.
Labour’s deputy leader is said to have been contacted by the force to arrange a date for officers to quiz her about the controversy.
She will be questioned over claims she breached electoral law, failed to pay capital gains tax and falsely received single-occupancy council tax discount.
The Sun on Sunday reported that officers have contacted the office of the Ashton-under-Lyne MP to arrange an interview and agree a date for it.
It is thought she will be invited to attend a police station voluntarily and interviewed under caution rather than be arrested.
A source told the newspaper: “There is a lot of information already in the public domain so there is no need to be heavy-handed.
“The police are more interested in gathering all the information they can, and having Angela come in and speak to them.
“They will then take a view on where the investigation goes from there once they have assessed the evidence.”
Police probing Ms Rayner have suggested there are multiple allegations which may extend beyond her housing arrangements.
The allegations centre on the sale of her council house in Stockport and whether she broke electoral law by giving false information of her address during the 2010s.
Ms Rayner has promised to resign if she is found to have committed a crime but has stated that she is confident that she has done nothing wrong.
GMP previously said it would not be investigating the allegations, but following a complaint from Tory deputy chairman James Daly, the police confirmed it had reassessed information and launched a probe.
Labour has said it is confident Ms Rayner has complied with the rules, and the Ashton-under-Lyne MP “welcomes the chance to set out the facts with the police”.
Ms Rayner has faced scrutiny about whether she paid the right amount of tax on the 2015 sale of her council house because of confusion over whether it was her principal residence.
She has rejected suggestions in a book by former Tory deputy chairman Lord Ashcroft that she failed to properly declare her main home.
The unauthorised biography alleges that she bought her former council house, in Vicarage Road in Stockport, Greater Manchester, with a 25% discount in 2007 under the right-to-buy scheme.
The former carer is said to have made a £48,500 profit when selling the house eight years later.
Government guidance says that a tenant can apply to buy their council home through the right-to-buy scheme if it is their “only or main home”.
Her husband was listed at another address in Lowndes Lane, about a mile away, which had also been bought under the right-to-buy scheme.
In the same year as her wedding, Ms Rayner is said to have re-registered the births of her two youngest children, giving her address as where her husband resided.
Ms Rayner has insisted that Vicarage Road was her “principal property” despite her husband living elsewhere at the time.
But neighbours have reportedly disputed her claim that she lived apart from her husband.
Labour leader Sir Keir Starmer has previously said the Conservatives are “chasing a smear” in raising questions about the deputy leader and people were more interested in “problems caused by this Government”.
Ms Rayner previously said she would “welcome the chance to sit down with the appropriate authorities” and said she was “completely confident” that there had been no wrongdoing.
In a statement, she said: “I have always said that integrity and accountability are important in politics. That’s why it’s important that this is urgently looked at, independently and without political interference.
“I make no apologies for having held Conservative ministers to account in the past. Indeed, the public would rightly expect me to do so as a Deputy Leader of the Opposition.
“We have seen the Tory Party use this playbook before – reporting political opponents to the police during election campaigns to distract from their record. I will say as I did before – if I committed a criminal offence, I would of course do the right thing and step down.
“The British public deserves politicians who know the rules apply to them. The questions raised relate to a time before I was an MP and I have set out my family’s circumstances and taken expert tax and legal advice. I look forward to setting out the facts with the relevant authorities at the earliest opportunity.”
A Labour spokesman said: “Angela has been clear that she will cooperate with any investigation. We do not plan to give a running commentary.
“We remain completely confident that Angela has complied with the rules at all times and it’s now appropriate to let the police do their work.”
Greater Manchester Police said they had no updates on the case.
