RM, how many accounts would depend on your objectives and budgeting. E.g. What are 7 and 9 allocated for? Also, you can eliminate the overlaps, e.g. put 2 into 6. For me, I have 8 bank accounts currently. I don't remember all the names. What I have: 1&2. POSB accounts - the normal savings one, and another one. - I use one for personal necessary monthly expenses and another for my fun / leisure / wants spending. 3. CIMB Starsaver i-savings (this is an Islamic savings account 0.8%/pa if there is a credit to your account every month. There is also the non-shariah-compliant version). - for long-term savings and investment opportunities. 4. UOB savings account (I don't remember if there is any minimum balance or fee incurred if not, however if you are able to have the minimum in it, then no concern) - for emergency buffer. 5. UOB Current account (there is annual fee charged. Most of the time I manage to get it waived) - I use this for the "free" cheques and setting aside of tithes (as and when income is received). 6. OCBC (there is an account that pays 0.4%/pa and you just have to transfer a small amount there every month. Don't have the name now.) - for allocation to training / education / personal development opportunities. 7. CIMB joint savings account - for bigger ticket household needs and saving to spend, household emergency buffer (e.g. renovation, furniture, kids' expenses when they arrive, pregnancy and delivery, Chinese New Year angbaos). 8. Standard Chartered salary account - for salary crediting. I don't like those accounts that offer higher interest but you need to fulfil a number of things like salary credit + spending a certain amount on credit card + paying how many bills with it + buying financial products, etc. Too much fuss.) Using different bank accounts for budgeting purposes makes sense to me. The only issue is remembering the different logins and passwords, if you don't access certain accounts often. For credit cards however, I think it is better to limit spending to 2-3 credit cards. For easier tracking and administration, as well as acumulation of cashback / miles / points.