Angela Rayner, who resigned as deputy prime minister after a standards report concluded she breached the ministerial code, is facing calls to waive a severance payment worth roughly £17,000 as questions mount about additional tax liabilities related to a recently purchased flat.

Under current rules Ms. Rayner is entitled to a severance payment equivalent to three months of her pay, about £17,000. Conservatives and other critics urged her to relinquish the sum after her resignation, arguing she had previously supported measures to withhold such packages where ministers are found to have broken the rules. New rules due to take effect on Oct. 13 would allow the government to block payoffs for ministers judged to have committed "serious" breaches of the ministerial code.

The resignation followed a standards report that found Ms. Rayner had breached the ministerial code. Separately, she has acknowledged that she should have paid a higher rate of stamp duty on a seaside flat because of a connection to a trust that owned her family home in her Manchester constituency. Tax experts have estimated that the additional stamp duty liability could amount to about £40,000.

Dan Neidle, a tax expert and campaigner, said Ms. Rayner might also face a penalty of up to 20% for "carelessness" in her tax arrangements, which could push her total bill close to £50,000 if applied. HM Revenue & Customs has processes for assessing additional tax and potential penalties; any final figure would depend on HMRC’s formal determination and appeal procedures, if pursued.

Labour officials confirmed Ms. Rayner’s resignation and said she had accepted the findings of the standards report. Conservative politicians pointed to her previous public support for denying exit pay to ministers found to have breached the code and called on her to forgo the severance. Labour’s leadership has not said whether Ms. Rayner will be asked to return the payment or whether the party will take action beyond her resignation.

The case highlights a growing focus on the intersection of ministers’ personal financial affairs and ministerial standards. The change in the rules from Oct. 13, which allows withholding of severance in cases of serious breaches, was announced before Ms. Rayner’s resignation and will apply to future determinations. The standards report that precipitated her resignation is part of the independent system for enforcing the ministerial code; its findings and recommendations typically prompt political fallout and sometimes trigger disciplinary or administrative measures.

Ms. Rayner’s potential HMRC bill, the severance entitlement and the timing of the rule change have become central points of contention in parliamentary debate over ministerial accountability. Any formal tax assessment or penalty would be issued by HM Revenue & Customs and is subject to the department’s established review and appeal mechanisms.