The tailla, sometimes translated as tallage, was a customary payment made by tenants, free and unfree, to the lord of the manor in addition to their rents and renders. The tailla occurs on 268 Lincolnshire holdings but only in two other entries in Great Domesday, both in counties which were also in circuit 6 (NTT 9,74. YKS 12W28). Whether this was the true distribution of this custom or another eccentricity of the commissioners in circuit 6 is unclear, though the later distribution of the custom suggests that it was more widespread than Domesday indicates.
For more detail, see Paul Vinogradoff, English society in the eleventh century: essays in English medieval history (1908).