ved per month using this method is 1.27 hours. Estimation of the monetary value of one hour of time saved for TFD users The monetary value of 1 hour saved is estimated based on the hourly salary rate. Bristol City Council provided pay band data per role for 2023, to which we added 33% to cover national insurance, pension contributions, and benefits, thereby estimating the total cost for the council per role. Social Finance Limited +44 (0) 20 7770 6836 87 Vauxhall Walk, London SE11 5HJ socialfinance.org.uk 104 Assuming a standard workweek of 38.5 hours and 231 workdays per year, we calculated the cost per hour per role. Next, we used the usage data to determine the distribution of user categories across different pay bands. Using this information, we computed a weighted average salary to represent the value of 1 hour saved. This calculation involved averaging the salaries per role, weighted by the proportion of each role among the active users from 2019 to 2023. We then arrive to an hourly salary per active users of £24.17 Salary per hour per role: Role Average annual salary NI and pension contribution (33%) Total cost for council Average number of worked days in a year Average number of working hours per day Salary per hour % of user population Analyst £24,792 £8,181 £32,973 231 7.7 £18.5 19% Manager £44,184 £14,581 £58,765 231 7.7 £33.0 24% Social Worker £29,734 £9,812 £39,546 231 7.7 £22.2 42% other £29,734 £9,812 £39,546 231 7.7 £22.2 15% Since this estimation relies on 2023 pay band data, we adjusted it for wage inflation in preceding years using ONS UK average weekly real earnings. We calculated the average weekly earnings for a specific year and then determined the wage deflator coefficient for that year by dividing the average weekly earnings of that year by the 