Here's a quick, short extract from a longer piece I've written on calculating your consulting day rates. This is geared toward solutions-based consulting, rather than dollars-for-hours contracting but hopefully the core ideas will translate.
Disclaimer - none of this is financial advice. Please get professional advice for tax and financial planning
1 - Calculate the likely number of days you'll work
Start by thinking about the number of days you are likely to work annually. (When I say 'workdays,' I mean days you're billing clients.) This will fluctuate, but we can use the following numbers for our rate calculations.
Annual workdays = 260 (52 weeks times 5)
Target number of consulting days
High = 130 (50%)
Low = 85 (33%)
These numbers will seem low but keep in mind that 1) you're not going to be working continuously 2) you will have admin time between engagements and 3) shorter engagements need more admin time.
(Also, given that this is IndieHackers, a lot of folks will be thinking; 'only working 5 days per week? Slackers!' But remember, we're calculating days you'll get paid to work as a consultant, not days we're busy with our business.)
2 - Calculate your costs & rates
Calculate your day rates (we'll work out two rates) as follows:
Example - Bruno
Bruno is a designer and lives in an expensive city, so he needs a higher net income. Taxes in his state are high, and he uses several contractors for some of the graphics work he needs, which drives his expenses up.
Bruno’s rates
3 - Differentiate between regular and project rates
You might be wondering how you use these low and high numbers when you're preparing a quote. After all, you won't know the number of days you've worked until the end of the year, so how will you know which rate to use?
The way I go about this is to think of the two rates as a 'normal' rate and a 'project' rate.
Again, this is geared towards day-rate consulting, not longer-term contracting but I hope the core idea of working from a costs basis helps you avoid starting consulting on an unstable financial footing.
You can read the full version of the article and find more of the Consulting Handbook I'm writing here
Good luck Indiehackers!
~Andrew
(I'm a 20+ year management consultant so definitely pulling the average age on the IH site upwards but hopefully some of that time was well-spent and will benefit some of the community who are thinking about taking the consultant route as part of their IH journey.)
Common business expenses
Monthly Recurring
Annual Charges
You can read the full version of the article and find more of the Consulting Handbook I'm writing here