This fiscal year's financial results were in the black.
We finally turned a profit by cutting costs.
black letter
Rare, domain-specific use referring to black lettering or text, as opposed to red or other colors. Not common in everyday conversation.
In this document, important items are printed in black letters.
This fiscal year's budget ended up in the black.
This company turns a profit every year.
The company's performance turned from a loss into a profit.
trade surplus
black-ink bankruptcy; insolvency despite accounting profits
return to profitability; turnaround into the black