When the majority of people visualize shooting portraits inside, the very first thing they think of is the photo studio setup with quality lights. But you don't need this kind of setup to create superior indoor portraits. Here are a few ways you can do a good job without resorting to high end lighting equipment.
Tip 1 - Background
Employing a black background is an excellent way to take advantage of whatever light you have. So some sort of heavy black material works best for this and you want to have the light tilted in a manner that it's pointing somewhat down and to one side of your subject, making a fairly professional portrait effect.
Tip 2 - Shutter Speed
By fixing your shutter speed somewhat higher than normal you are able to make full use of the indoor light. You might want to play around with this to work out the perfect setting for your situation.
Tip 3 - Testing
When working indoors it's best to experiment with a variety of settings and positions for your lights, subject, backdrops, shooting position along with camera configurations.
Once you've done this testing you'll know what the optimal setup is and you will be able to jump straight into it.
Tip 4 - Soften The Light
Some types of lighting come across a little harsh when used in a photograph, so instead of having the light pointed straight at your subject what you can do is bounce the lighting off some kind of white reflecting surface and on your client. This will soften your light and help create a beautiful image.
Tip 5 - Practice
The more expertise you've got with capturing portraits indoors, the more skilled you will be to judge new locations, and you will be able to quickly use this expertise and take advantage of whatever you've got on hand to create fantastic portraits.
Shooting indoor portraits away from your photography studio often calls for some improv, but the more experience you have with this sort of portrait photography, the better you are able to put together answers to problems.
And like every other type of photography, the type of equipment you use will play its part, so having a camera available you're comfortable using for these sort of photography jobs is a big advantage.