Months one to three: open one account and use it lightly
You need an account reporting activity, not a wallet full of them. One suitable card, used for a small recurring expense and paid in full each month, is enough to start a payment history. Resist applying for several at once — a burst of applications on a thin file looks worse than patience.
Keep utilisation genuinely low
Utilisation is the share of your available limit you are using when the balance reports. Keeping it in single digits consistently is materially better than paying off a large balance after it has already reported. If your limit is low, pay mid-cycle rather than waiting for the statement.
Months four to nine: do nothing dramatic
This is the boring stretch that does most of the work. Pay on time, every time, and let the account age. Payment history carries more weight than almost anything else, and the only way to build it is elapsed months.
Credit building is mostly a waiting game with good habits attached. There is no technique that replaces twelve on-time payments.
Months nine to twelve: review, then consider a second account
Once you have consistent history, a second account can help by increasing total available credit and lowering overall utilisation. Add it deliberately, not opportunistically, and only if the first account is comfortably under control.
What to avoid the whole year
Do not close your first account once you upgrade — age matters. Do not carry a balance believing it helps your score; it does not, it only costs interest. And do not chase offers that require spending you would not otherwise do.
