いくら～でもNo matter how (much)

In a similar way to どんなに～ても, いくら～でも is regularly translated to 'no matter how (A), (B)'. However, unlike どんな (which is an abbreviation of どのような), いくら is a noun that comes from the kanji 幾(いく)ら, meaning 'how much'. When partnered with ても (with verbs and い-Adjectives), or でも (with nouns and な-Adjectives), the literal meaning means 'however much (A), (B)'.

With いくら～でも, the (B) part of the phrase will usually highlight something that is being negated, giving the phrase it's 'no matter how much' nuance.

Despite this trend of being used in sentences that contain ない or ありません, いくら～でも may also be seen in positive sentences. In these cases, despite not being negative, the (B) phrase will still be something that is surprising/unexpected in some way (due to its extent or amount).

Fun Fact

幾(いく)ら places more emphasis on the 'amount' of something, while どんなに places more emphasis on the 'type', or 'style'. Due to this, いくら will be a better choice when the 'volume' of something is being highlighted, while どんなに will sound more natural when the 'state' is being discussed.

Despite this small difference, いくら and どんなに are used fairly interchangeably in most situations.