Depends on the engine.
maybe ring Volvo and ask them, I don't know about Volvos but they may use timing chains now instead of belts
Belts on these.
I believe you're looking at 6 years/108,000 miles but would definitely be worth confirming.
First link on Google: https://www.volvoforums.org.uk/showthread.php?t=211512
10 years!! That seems awfully long. I know belts wear with use, but they'd also deteriorate over time.
Just sorting out the timing belt for my partners Seat Ibiza, and that's 4 years/80k.