Even if you exclude your spouse from your will, they still have the right to claim part of your estate. This is called the “elective share.” They can claim an elective share in an amount equal to what they would have received if you had died without a will (intestate). This amount is usually about a third after debts are paid off. The only requirement for this exemption is that you must have been married for at least a year.
If you and your spouse divorce after you sign your will, this will affect your spouse’s inheritance. Any will provisions that provide for your spouse’s inheritance will be voided because of the divorce. For this reason, it’s a good idea to draft a new will and reconsider your distributions if you happen to divorce.