The September 2026 release (release 22, BookTrove 10) adds the rules of the Nigeria Tax Act 2025 and the Nigeria Tax Administration Act 2025 to everyday bookkeeping, pays suppliers in batches, sends larger items through approval chains, emails customers, and links BookTrove with AuditTrove and PayTrove. Each change is shown in the illustration's first quarter.
| What changed | What it does | Where |
|---|---|---|
| Tax ID: TIN, RC number or NIN | Contacts have a NIN field and a Tax ID worked out from the TIN, RC number or NIN. WHT doubles only when there is no Tax ID at all (a setting keeps the stricter reading). Reports and exports show the Tax ID and its type. | 19.1–19.4 |
| Supplier e-invoices (IRN) | The supplier's IRN, CSID and QR text on bills and vendor credits, with a format check; suppliers marked as large taxpayers; warn, hold (account 1162) or ignore missing IRNs; verification with the NRS where keys are set; a new input VAT (IRN) report. | 19.5–19.10 |
| Zero-rated and exempt items | Items and item categories carry their VAT category from the 2025 Act; sales lines default to the right code and warn about 7.5% on a zero-rated item; a new item VAT treatment report. | 19.11–19.15 |
| VAT withheld at source | VAT withheld by customers (account 1165, box 12b of the VAT return) and, for appointed agents, VAT withheld from suppliers (account 2110), with a remittance schedule due by the 14th and a VAT withheld tab. | 19.16–19.21 |
| Approval chains | Rules by document type and amount with up to five levels of named approvers or roles, delegates, rejection with a reason, in-app and email notifications. | 20 |
| Payment batches and bank files | Pay many bills at once with WHT and VAT deducted, approval, a NIBSS NIP bulk file or a generic CSV, and confirmation; supplier bank details on contacts. | 21.1–21.7 |
| Split bank matching and splitting rules | Match one statement line to several transactions (or the reverse); bank rules that split a line across accounts. | 21.8–21.10 |
| Invoices and credit notes by email (PDF or secure link), statements, manual and scheduled payment reminders, editable templates and a send log. | 22 | |
| Access tokens with scopes | Tokens say what an app may do: read, propose adjustments, send document requests or send payroll journals. | 14.5, 23.1–23.2 |
| Payroll inbox (PayTrove) | Payroll journals sent from PayTrove, with cost centres, posted after a check or automatically. | 23.3–23.5 |
| Auditor proposals and requests (AuditTrove) | The auditors' proposed adjustments, accepted or rejected, and their document requests, answered with files. | 23.6–23.11 |