Every new project for every client should be costed separately. Develop a clear project brief that explains what you are going to do. Include a separate quote, which explains what exactly is expected, the delivery schedule and related costs. This ensures clear communication, which improves the working relationship with your clients and is part of managing expectations on both sides.
Plan carefully how you will execute the project. Predict your time spent on meetings, producing the work or dealing with subcontractors. If you have kept time records on past projects you should have a realistic overview of how long a comparative project should cost you in time. Add on 10-15% just in case and give a total figure rather than an hourly rate.
Predict your costs for materials, transport, insurance, subcontractors etc. Add all these costs up and again have a 10-15% contingency.
Research any manufacturing or subcontracting costs before committing and get their quotes and lead times in writing too. Check they available and can work to your timescales. Subcontractors might quote excluding VAT and if you are not VAT registered you will have to add this on (17.5%).
Calculating your hourly rate
Calculate your overheads:
- Make a list of your annual overheads and calculate your weekly overheads by dividing the total annual overhead costs by the numbers of weeks you work in a year ie £6,000/48 = £125.00 (this takes into account four weeks to cover holiday and sickness)
- The number of hours spent each week on undertaking paid work (so do not include marketing, bookkeeping etc) Keeping a timesheet for six weeks can help if you do not know ie 24 hours spent on paid work per week
- Calculate your hourly rate by dividing your weekly overheads by your weekly worked hours ie £125/24 = £5.21
- If you work with employees this calculation is as follows: £120,000/48×5 = £500/15 = £33.33
Calculate your living costs:
To work out your weekly living costs (what you need to earn at least in order to live):
- Make a list of your annual personal living expenses (incl. holidays, rent, food, clothing, transport) and calculate your weekly living costs by dividing the total annual personal living costs by the numbers of weeks you work in a year ie£12,000/48 = £250.00
- For an hourly rate that covers your weekly living costs of £250.00, divide the weekly total by the number of hours spent making objects ie £250/24 = £10.42
- If you are not a sole trader then use your total annual fixed costs or overheads instead of personal living expenses
The last steps:
- To calculate your total hourly rate: add the living hourly rate to the overheads hourly rate ie £10.42+£5.21 = £15.63. This is the absolute minimum that you need to earn every hour that you are undertaking paid work to make a living
- Add in the profit margin, a freelancer’s profit margin can range from 15-40%, with 20% being considered fair in most markets
- Add all these together and you will have your hourly rate: £10.42 + £5.21 x 20% = £18.76

