A haircut is so personal and it makes you feel like a million bucks if done right… for $5 bucks, If they do a good job, I'd give them another $5. Most places charge 6-7 times that without a tip. Places near me went from $20 to 30/35 in the last two years. I used to tip $10, still think that is reasonable.

Do tip 15-20% of the total cost. The standard tip for a barber or hairdresser is 20-30% of the total cost of the service. This is a good baseline to use, but you can adjust the tip based on your satisfaction with the service and your personal budget. Don't feel obligated to tip more than you can afford.

While the general tipping standard for haircuts is 15-20%, tipping for other services, such as shaves or beard trims, varies. Some barbers may expect a higher tip for these services, while others may not. As a general rule of thumb, it's a good idea to tip between 20-25% for “special” services: Shaving.

Some people are willing to pay a lot for a good haircut. Another thing about America and most developed countries is that labor is quite expensive, while machines are relatively cheap. Cutting hair can't be done properly by machine, so a person needs to be paid to do it.