Back Are you married or in a civil partnership? This section is Check your eligibility Yes No You are not eligible for Marriage Allowance because you are not married or in a legally registered civil partnership. You can make a Marriage Allowance claim if your partner has since died, provided the conditions are met. It can be backdated up to 4 years, as with current claims. If this applies to you call HMRC on 0300 200 3300. Continue