General Ledger is the master accounting record that holds the balance of every account a company uses, from cash and receivables to client liabilities, revenue and expenses. It follows double-entry bookkeeping, so each transaction posts equal debits and credits. Every financial statement, including the balance sheet and profit and loss account, is built from its balances, which auditors test first. Payments companies keep transaction detail in sub-ledgers, such as wallet or payment ledgers, that post summarised entries daily to control accounts. For EMIs and payment institutions, safeguarding reconciliations compare the ledger's client liability balance with money actually held, and unreconciled differences become a regulatory risk a buyer inherits, often priced through an indemnity or retention.
How does a general ledger work
The general ledger follows double-entry bookkeeping: every transaction is recorded as at least one debit and one equal credit, so the ledger as a whole always balances. Accounts are organised in a chart of accounts, typically grouped as assets, liabilities, equity, income and expenses. A card payment of €100 received by a merchant acquirer, for example, debits a receivable from the card scheme and credits a liability to the merchant; when the scheme settles, the receivable is cleared against the bank account. If the acquirer charges that merchant a 1.4% fee, a second entry moves €1.40 from the merchant liability to fee revenue, so the ledger shows €98.60 owed to the merchant and €1.40 earned. Month-end close is the point at which every such posting for the period is complete, reviewed and locked, after which corrections go through dated adjusting journals rather than edits.
General ledger vs sub-ledger
A payments company cannot post millions of individual transactions directly into its general ledger. Detail sits in sub-ledgers and operational systems, such as a customer wallet ledger or a payment ledger holding each authorisation, capture and refund. These systems post summarised journal entries to the general ledger, usually daily.
Suppose an e-money institution holds 40,000 customer wallets. The wallet sub-ledger lists every balance; the general ledger carries one control account, "e-money liabilities to customers", say €18.4 million. If the sum of wallet balances is €18.43 million, the €30,000 gap has to be explained before month-end close, because it means either a posting failure or money that belongs to customers being misstated.
Why the general ledger matters for safeguarding
For EMIs and payment institutions, the general ledger is where regulators look to see whether client money is fully protected. Under the FCA's PS25/12 rules, in force from 7 May 2026, UK payment and e-money firms must reconcile safeguarded funds every business day, submit a monthly safeguarding return and obtain an annual safeguarding audit. Those reconciliations compare the general ledger's client liability balance against the money actually held in safeguarding accounts.
What a buyer looks for
In due diligence on a licensed fintech, the general ledger shows whether the business can produce a clean trial balance quickly, whether control accounts agree with sub-ledgers, and how many manual journals are posted to force them to agree. A history of unreconciled differences in client money accounts is a regulatory risk the buyer inherits on completion and is commonly priced through a specific indemnity or a retention.