What bank/issuer and or which cards? Policies vary so what goes for one card/bank may not work for another. Capital One for instance is famous for doing hard pulls for nearly any request in CL. How long have you had these accounts? All CC issuers review accounts periodically and will often adjust limits up or down based upon various factors.

Generally if the account is being handled well and or holder meets certain standards of creditworthiness increases happen automatically. That is you get an email or letter saying "congratulations, based upon...... we've raised your limit to....".

Problem with making multiple payments per month is it won't always be reflected on credit reports.

Most issuers report to major credit bureaus once a month. This report will contain payment information, balance owed and credit limit. Thus making multiple payments per month is great for keeping utilization down for a particular card, but other than the issuer and yourself no one else is ever likely to know because those extra payments aren't reflected on you CR and or credit score.

Either contact issuer and or come back to us with names of cards to find out if bank in question is likely to do a hard pull for a CL increase. If they don't then you have nothing to loose by making the request either online or via telephone customer service.

OTOH if you *know* a hard pull will be done I'd not go crazy making too many requests in a short period of time.