The traditional use of timesheets is for your team to record time spent on jobs and clients, and at period end review how much there is on the client’s ledger (work in progress) to calculate the price to charge.
In reality we both know that the client rarely gets charged what’s actually on the timesheet. Instead, you will look at the time costs and then make a judgement. If you feel the amount is too low and know the client will pay more, you will raise a higher amount. Similarly – and most commonly – if you think the amount is too high and the client is unlikely to pay, you will ‘write off’ an amount and raise a fee that you think the client will pay – a bit like this graph
So it’s clear that using time to price is completely arbitrary, and involves judgment from you to raise a fee you think the client is willing to pay. It has nothing to do with time spent.