Summons to payment is a quest item in the Hearts of Stone expansion. If you answered yes to two or more of the questions asked during The Taxman Cometh, Walthemor Mitty will give this to Geralt and must pay 1,000 
in back taxes. Until it's paid for, Geralt can't access Vimme Vivaldi's services.
Its opposite is the Taxpayer in Good Standing Diploma.
Journal entry[]
- Geralt of Rivia, a witcher of the Wolf Guild headquartered at Kaer Morhen (Kaedwen, Aed Gynvael district, tax identification number: 788776543), is hereby summoned to settle tax arrears in the amount of 1000.00 NC (one thousand Novigrad crowns and zero coppers) as soon as physically possible at any branch of the Vivaldi Bank. Failure to heed this summons will lead to said delinquent being cut off from access to the banking system.
- On behalf of the Revenue and Customs for Occupied Temeria, Dorian branch
Deputy Tax Enumerator Walthemor Mitty