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Why don't banks give access to all your transaction activity?
I would say a lot of the answers here aren't quite right. The main issue here is that banking is a highly oligopolous industry - there are few key players (the UK, for example, has only 5 major banks operating under a variety of brands: it's all the same companies underneath) and the market is very, very hard to enter owing to the immense regulatory burden. Because the landscape is so narrow and it's possible to keep close tabs on all  your competitors, there's no incentive to spend money on shiny new things to keep up with the competition - the industry is purely reactive.  If nobody else has an awesome, feature-filled online portal, there's no need for any one bank to make one.  If everybody is reactive, and nobody proactive, then it's a short logical deduction that improvements happen at a glacial pace. Also take into account that when you've got this toxic "bare-minimum" form of competition, the question for these people soon turns to "what can we get away with?" which results in things like subpar online portals with as much information as you like delivered on paper for a hefty charge, and extortionate, price fixed administrative fees.  Furthermore your transaction history is super valuable information.  There are one or two highly profitable companies who collate international transaction data and whose sole job in life is to restrict access to that information to the highest bidders.  Your transaction history is an asset in a multibillion dollar per year industry, and as such it is not surprising that banks don't want to give it out for free.