After many years billing as a consultant I found that I was happiest when I ignored bill-thru rates and just focused on getting a fair rate commensurate with my

After many years billing as a consultant I found that I was happiest when I ignored bill-thru rates and just focused on getting a fair rate commensurate with my market value. Unless the gig you are ending is unusual, or short term, it would appear that your market value is at least 45/hr. I would either offer that, or if you want to test your value, increase it to 50. If the company does not value your time at that rate, they won't pay it. As a consultant it's important to remember when you're discussing rates with a client, it's not a reflection of your personal worth, just your economic value. You can test your market value by either offering them a lower rate, or trying to find other work at 45-50 hr. Over time I learned that when I felt I was getting too busy it was time to rate limit the work I was getting by raising my rates. Or vice-versa.