https://sumhour.com/blogAgency billing, time and marginenhttps://sumhour.com/blog/agency-hourly-ratehttps://sumhour.com/blog/agency-hourly-rateMon, 09 Nov 2026 00:00:00 GMTThe arithmetic behind an agency hourly rate: a year of costs, the hours you really bill, and the margin on top, worked through with real numbers and the usual traps.