When preparing a file for a print house, you usually prepare it in CMYK color mode. However, home printers are set to use RGB color profiles.
Before learning this fact, I used to work in RGB, then convert to CMYK, and then send to the printer. When you send your home printer a CMYK file, it will automatically convert it into RGB before printing it. So in my case, that would be a redundant double conversion, with possibly loss of color detail.
Save yourself the trouble and keep your files in RGB mode for digital home printing
Which ICC profile to use?
Should the ICC profile be sRGB, Adobe RGB (1998) or ProPhoto RGB?
Short answer: it depends.
I find ICC profiles a teeth-grinding issue, so diificult to wrap my head around it. And the answer certainly won’t fit a bite-size tip. Let me know if this interests you, and I will write a separate post on the subject.