A credit balance of $50 was brought forward from his September account.

50元的贷方余额是从他九月份的账上转来的。

《牛津词典》

Clerk: we mean that we compute interest on your account balance every day and credit it to your account on a quarterly basis.

职员：我们的意思是说，我们每日计算您的帐户余额应得利息，并且每个季度把应得利息计入您的帐户的贷方。

youdao

We credit your earned interest automatically to your account and that figures as part of the balance for the next interest-earning period.

我们会自动地把您赢得的利息计入您的帐户的货方，而且这些利息成了您的帐户中存款余额的一部分。

youdao

As part of that agreement and in return for a partial payment, the credit card company canceled the unpaid balance of the credit card account.

FORBES: Avoiding Excess Credit Card Interest Should Not Be A Taxable Event

This would allow even the tiniest Hong Kong broker to offer its clients online trading on the Exchange's site, which will simply check with the brokers to confirm the client's account balance and credit-standing before executing the order.

ECONOMIST: Online trading in Asia

Two-thirds of mobile banking users say they used their mobile phone to check an account balance or available credit before making a large purchase in the past twelve months.

FORBES: Smart Phones Helping Consumers Manage Their Money