One tip when donating professional services is to provide an invoice for the work done with the balance indicated as comped. This is essential in making sure th

One tip when donating professional services is to provide an invoice for the work done with the balance indicated as comped. This is essential in making sure that the recipients understand the value of what they’re getting (so on your invoice you would bill your regular rate—if you don’t do hourly billing for work, a good rule of thumb is to take your annual income and drop off the last three zeros to get an hourly rate). That said, as many people have indicated, working directly with non-profits on a volunteer basis for professional work rarely works out. Your bench time is probably best directed towards OSS projects.