诺曼征服后,税收契约原则在英国封建制度中得到确认。但是,随着负担的加重,英国王室经常入不敷出。为保证王室收入的稳定,国王往往会要求封建领主们在税收契约之外增加负担。尤其到约翰国王时期,国王过度的税收要求,引发了封建领主们的反对,并由此导致战争。随着约翰国王的战败和《大宪章》的签订,税收契约的原则再次得到书面确认。 After Norman conquered, the principle of tax covenants was confirmed in the British feudal system. However, with the increased burden, the British royal family often make ends meet. In order to ensure the stability of the royal income, the king will often require feudal lords to increase the burden of tax contract. Especially by the time of King John, the king’s excessive taxation requirements led to the opposition of the feudal lords and led to the war. With the defeat of King John and the signing of the Magna Carta, the principle of tax covenants has once again been confirmed in writing.