What is accounting software?

At its core, accounting software does three things in sequence: it records a transaction, classifies it against a chart of accounts, and reports the result. Every sale, purchase, payment, and receipt is captured once, posted to the right ledger accounts using double-entry bookkeeping, and then rolled up into statements — the trial balance, income statement, balance sheet, and cash-flow statement.

Around that core sit the day-to-day modules most businesses actually use: accounts receivable (who owes you and for how long), accounts payable (what you owe suppliers), bank reconciliation, and tax computation. The point of the software, versus a spreadsheet, is that a number is entered once and flows everywhere it belongs — so the VAT on an invoice, the receivable it creates, and the line on the income statement all stay consistent without re-keying.

What accounting software typically includes

• A general ledger built on a chart of accounts, using double-entry bookkeeping
• Accounts receivable and accounts payable with ageing
• Bank and cash reconciliation
• VAT, withholding, and income-tax computation for BIR filing
• Financial statements: trial balance, income statement, balance sheet, cash flow
• The books of account the BIR requires — general journal, general ledger, and subsidiary books

The most common point of confusion is the difference between accounting software and an ERP (enterprise resource planning system). The simplest way to hold it: accounting software is a system of record for money, while an ERP is a system of record for the whole business — of which money is one part.

An ERP carries the same general ledger, AR, and AP as standalone accounting software, but adds inventory, manufacturing, procurement, sales, and often payroll and HR — all sharing one database. The advantage is that a sale automatically reduces stock and posts revenue, a production run consumes raw materials and books the cost, and payroll posts salary expense — without anyone re-entering the figures. Standalone accounting software, by contrast, often relies on data being imported or manually re-keyed from a separate POS, inventory, or payroll system.

For a service firm or a small trader, accounting software alone is usually enough. The case for an ERP appears when re-keying between systems becomes the bottleneck — when stock, sales, and the books drift out of sync because three systems each hold their own version of the truth.

Like most business software, accounting tools come in two deployment shapes. On-premise (or desktop) accounting software installs on a machine in the office and keeps the data file there; it works without internet but ties the books to one location and one set of backups. Cloud accounting software keeps the books on a server reached over the internet, so the owner, the bookkeeper, and the accountant can all work in the same live file, and bank feeds and e-invoicing can connect directly.

For Philippine businesses the practical pull toward cloud is the BIR's direction of travel: electronic invoicing and sales-data transmission are easier to wire up when the books already live in a connected system. The trade-off is the familiar one — control and one-time cost on-premise, versus convenience and a recurring subscription in the cloud. Whichever you choose, the system must still be registered with the BIR; deployment shape does not change the compliance obligation.

This is where Philippine accounting software diverges sharply from generic guides. Here, accounting software is not just a finance tool — it is a regulated record-keeping system. Once a business keeps its books electronically rather than in manual, bound, stamped ledgers, the BIR treats that software as a Computerized Accounting System (CAS), and it must be registered.

An important update many older guides get wrong: the Permit to Use (PTU) for a CAS was removed. Under RMC No. 5-2021 (dated 8 January 2021), the BIR did not merely suspend the PTU — it categorically dispensed with it. In its place, RMO No. 9-2021 (19 February 2021) set a simplified registration: a taxpayer submits the documentary requirements to its Revenue District Office and, within three working days, receives an Acknowledgement Certificate. There is no longer a system demonstration before go-live; the BIR conducts a post-evaluation instead. So the correct phrasing in 2026 is register your CAS and obtain an Acknowledgement Certificate — not apply for a PTU.

Layered on top is electronic invoicing. RR No. 11-2025 (27 February 2025) implements the e-invoicing and electronic sales reporting mandate under the CREATE MORE Act, requiring covered taxpayers to issue structured electronic invoices and transmit sales data to the BIR's Electronic Invoicing System. RR No. 26-2025 (5 September 2025) extended the compliance deadline to 31 December 2026. Accounting software that cannot register as a CAS, generate the required books of account, and — for covered taxpayers — produce structured e-invoices for EIS transmission is a compliance gap, not just a feature gap.

What BIR-ready accounting software must handle

• Registration as a CAS (or a CAS component) with an Acknowledgement Certificate — not a PTU, which was removed
• The BIR-required books of account: general journal, general ledger, and subsidiary books
• Correct VAT and withholding-tax computation for the relevant returns
• Sequential, system-generated invoice and official-receipt numbering
• Structured electronic invoices and sales-data transmission to the EIS, for taxpayers covered by RR 11-2025 (deadline 31 December 2026 per RR 26-2025)
• Audit-ready electronic storage and retention of accounting records

For most small and mid-sized Philippine businesses, off-the-shelf accounting software — local or cloud — is the right call. It is inexpensive, quick to set up, and the common BIR workflows are usually built in. The calculus shifts for larger, multi-entity, or operationally distinctive businesses, where a generic package cannot model the workflow, per-user and per-entity fees compound monthly, and the CAS and e-invoicing obligations are non-negotiable rather than nice-to-have.

At that scale the decision is less "which package?" and more "buy or build?" — whether to keep paying a growing subscription for a system you do not own and cannot fully shape, or to build accounting and operational software around your own structure: BIR-compliant from the first invoice, registered as a CAS, integrated with inventory and payroll rather than re-keyed, and owned outright. That build-versus-buy decision, for Philippine enterprises that have outgrown shrink-wrapped software, is what Orkids is built to handle.