"Do you need any help?"

Translation: 你需要任何帮助吗？

[WillowsofXihu]

This is incorrect grammar; 帮忙 must be preceded by 我, otherwise 帮助 should be used.

[ClassiDuo]

I think it's OK without 我--at least for Mandarin as spoken in Taiwan.

[Lomochibi]

I've never heard of this rule, can a native confirm this? Please? :)

[ThieumL]

I worked 6 months in a hotel in China, everybody says exactly 需要帮忙吗？when asking guests if they need assistance.

[Randy703281]

Somehow yea....

[NathanRasm]

Both can be used as nouns (without 我 preceding as a subject), but when used as nouns 帮助 is more formal than 帮忙.

[elmanisero777]

why not use 你需要帮助吗？

[Yammy4488]

Yes what's the difference between 帮助 and 帮忙?

[RobMac]

Why not "你需要什么帮助吗？"