Every module you need, explained in full
Accounting, GST, inventory, reporting, security, and cloud sync — one fast, offline-first desktop app that respects how accountants actually work. Here is exactly what each part does and how it fits together.
What holds it together
Four ideas run through every feature
Acronix Books is built on four commitments. They are not marketing lines — they show up concretely in each module below.
Fast
Common actions land in under 200ms and hot queries in under 50ms. Lists are virtualized and shortcuts fire in a single frame, so data entry keeps pace with your typing — even at 50,000+ vouchers a year.
Offline-first
Your books live in a local database on your own machine. Every screen works with the internet unplugged; the cloud is an option you switch on, never a dependency you wait for.
Secure
The database is encrypted at rest with SQLCipher AES-256, unlocked through a per-user key vault, and protected by role-based access, idle auto-lock, and a tamper-evident audit trail.
GST-ready
HSN/SAC codes and tax categories are part of invoicing from the first entry, so the tax registers, HSN summary, GSTR-1 and GSTR-3B, e-invoice and e-way bill all fall out of clean data — exported in the government offline-utility layout.
Accounting & Vouchers
A complete voucher system, done right
Acronix Books ships ten double-entry voucher types — Sale, Purchase, Receipt, Payment, Contra, Journal, Credit Note, Debit Note, Delivery Challan and Stock Journal — all driven by one shared voucher form and a single posting engine. Because every voucher posts to the same canonical ledger, the trial balance, P&L and balance sheet always tie out, and each entry lands in the correct financial year automatically.
How it works
- 1
Set up your company and masters
Create one or more companies, then build your chart of accounts. A merged ledger master holds parties, banks, cash, tax and general accounts in one place, grouped under account groups.
- 2
Configure voucher series
Define numbering series per voucher type so sales, payment, journal and note numbers stay sequential, gap-free and audit-friendly across the year.
- 3
Enter vouchers at keyboard speed
Post any of the ten voucher types through one consistent, keyboard-first form with ledger auto-complete — no mouse required, and F10 saves in a single keystroke.
- 4
Track bills and review the day book
Bill-by-bill tracking ties receipts and payments back to specific invoices, and the day book gives a running, filterable view of every posting as it happens.
What's included
The ten voucher types
- Sale & purchase
- Receipt & payment
- Contra & journal
- Credit & debit notes
- Delivery challan & stock journal
One engine, one ledger
- Single generic voucher form
- Shared double-entry posting engine
- Merged ledger master
- Configurable voucher series
Masters & scale
- Ledgers & account groups
- Bill-by-bill outstanding tracking
- Multiple companies in one install
- 50,000+ vouchers per FY, no slowdown
Who it's for — a distributor running several firms who wants one place to post the full day book, reconcile bills, and keep each company’s financial year cleanly separated.
GST Compliance
A full GST suite, not just a returns button
GST is wired into invoicing from the very first voucher, not bolted on at filing time. A dedicated GST module gives you the tax registers, an HSN summary, both monthly returns, and e-invoice and e-way bill generation — all computed straight from the same clean data, so month-end reconciliation becomes a review instead of a rebuild.
How it works
- 1
Classify items once
Assign HSN/SAC codes and tax categories to your items and ledgers so the correct GST rate — CGST + SGST intra-state or IGST inter-state — is applied automatically on every invoice.
- 2
Review the tax registers
The Sales, Purchase, Output Tax and Input Tax registers, plus a rate-wise HSN summary, give you an auditable trail behind every figure before you file.
- 3
Generate GSTR-1 and GSTR-3B
Generate GSTR-1 (outward supplies) and GSTR-3B (summary) for the period and export each to Excel in the government offline-utility layout, ready for the portal.
- 4
Produce e-invoices and e-way bills
Prepare e-invoice and e-way bill data from the same voucher, so IRN and transport documents come from your books rather than a separate re-entry.
What's included
GST-aware data entry
- HSN & SAC codes
- Tax categories per item/ledger
- CGST/SGST vs IGST automatically
- GST-ready invoicing built in
Registers & summaries
- Sales & purchase registers
- Output & input tax registers
- Rate-wise HSN summary
- Computed locally from your books
Returns
- GSTR-1 — Excel export
- GSTR-3B — Excel export
- Offline-utility layout
- Monthly or quarterly periods
E-documents
- E-invoice generation
- E-way bill generation
- From the same voucher data
- Hand off cleanly to your CA
Who it's for — an owner-operator or their accountant who files GSTR-1 and GSTR-3B every cycle, raises e-invoices and e-way bills, and wants every one of them to fall out of day-to-day invoicing instead of a last-minute spreadsheet rebuild.
Inventory & Job-work
Stock control tuned for traders & manufacturers
Track exactly what you hold, where you hold it, what it is worth, and what has gone out for outside processing. Acronix Books models items, item groups, units, tax categories and multiple warehouses, values stock by weighted-average or FIFO, and adds the delivery-challan and job-work handling that Surat textile traders and small manufacturers depend on to keep tabs on material sitting with a job worker.
How it works
- 1
Define items, groups and units
Build your item master with item groups and units of measure (metres, cones, kg, pieces) that match how you actually buy and sell.
- 2
Place stock across warehouses
Hold inventory in more than one warehouse or location and see quantities per site, so branch and godown stock never blur together.
- 3
Move stock with challans and journals
Issue delivery challans for goods leaving your premises and record stock journals for internal transfers, adjustments, and production movements.
- 4
Rate and reconcile job-work
Set job-work rates for outsourced processing and track material sent out and received back, so nothing goes missing at the job worker.
What's included
Item masters
- Items & item groups
- Units of measure
- Tax categories
- Multi-warehouse stock
Movement & valuation
- Delivery challans & stock journals
- Inter-warehouse transfers
- Weighted-average & FIFO valuation
- Stock summary, ledger & party stock
Job-work
- Job-work rate masters
- Material sent for processing
- Job Work Register
- Built for textile job work
Who it's for — a textile trader or job-work manufacturer who sends greige fabric or yarn out for dyeing and finishing and needs a clear ledger of what left, at what rate, and what came back.
Reports & Exports
Answers in a keystroke, exports in a click
Every report is computed locally from your own data, so it renders the instant you ask for it — no cloud round-trip, no spinner. Drill from the Profit & Loss or Balance Sheet straight into the ledger behind a figure, scroll a full year on a virtualized list without a stutter, then hand off a polished PDF or a working Excel file.
How it works
- 1
Pick a report
Open the day book, trial balance, a ledger statement, the P&L, balance sheet, cash flow, outstandings or any stock report — all driven from the keyboard.
- 2
Scope it to a period
Filter by company, branch, and date range within the financial year. Results recompute locally in milliseconds.
- 3
Drill into the detail
Move from a P&L or balance-sheet group down to the individual vouchers behind it on virtualized lists that stay smooth across tens of thousands of rows.
- 4
Export and share
Send any report to PDF for a clean printed copy, or Excel for further working and sharing with your accountant.
What's included
Ledgers & day book
- Day Book
- Ledger Statement
- Trial Balance
- Cash Book
Financial statements
- Profit & Loss (drill-down)
- Balance Sheet (drill-down)
- Cash Flow
- Cash Flow Statement (IFRS)
Outstandings & stock
- Outstandings (receivables & payables)
- Stock Summary & Stock Ledger
- Party Stock
- Job Work Register
Speed & export
- Sub-50ms hot queries, computed locally
- Virtualized, non-stuttering lists
- Export to PDF & Excel
- Period & company scoping
Who it's for — a retailer or accountant who wants a trial balance or party ledger on demand at the counter or the desk, and a print-ready PDF or Excel to share in seconds.
Security & Encryption
Bank-grade security, on your own machine
Your books never leave your control, and on disk they are unreadable without your credentials. Acronix Books encrypts the entire database with SQLCipher AES-256 and guards the key with a real envelope key-management system — layered with access control, idle auto-lock, and an audit trail you can trust.
How it works
- 1
Encrypt the database at rest
The whole book is stored with SQLCipher AES-256 encryption. Without the key, the file on disk is meaningless bytes.
- 2
Guard the key in an envelope vault
A scrypt-derived key-encryption key (KEK) protects per-user key slots, so the encryption key is never stored in the clear — and a recovery code lets you back in.
- 3
Unlock and control access
Encrypted login and unlock gate every session; five role levels — Viewer, Operator, Accountant, Admin and Owner — scope what each user can do; and idle auto-lock closes the book when you step away.
- 4
Prove integrity with an audit chain
A tamper-evident audit trail, a login log and voucher audit record every change so alteration is detectable, period lock freezes filed periods, and encrypted .acxb backups stay protected outside the app.
What's included
Encryption at rest
- SQLCipher AES-256
- Envelope key vault
- Per-user key slots
- scrypt-derived KEK
Access control
- Encrypted login & unlock
- One-time recovery code
- Idle auto-lock
- RBAC — Viewer to Owner
Integrity & backup
- Tamper-evident audit hash chain
- Login log & voucher audit
- Period lock
- Encrypted .acxb backups
Who it's for — any business that treats its financial records as sensitive — and every firm sharing one machine across staff who each need their own login and permission level.
Cloud Sync & Backup
Optional cloud sync — offline-first always
Switch on full-book cloud sync when you want an off-site safety net and access across devices, without ever giving up local-first speed. Each client gets its own isolated, encrypted cloud backup, and a fresh device can be restored to a complete book in minutes — but the app remains fully usable with the internet switched off.
How it works
- 1
Work offline by default
Everything runs against your local database first. Sync is opt-in; nothing is sent anywhere until you choose to enable it.
- 2
Enable full-book sync
Turn on sync to push your complete book to an isolated, encrypted cloud backup that only your client can read.
- 3
Sync on your terms
The app keeps working offline and reconciles with the cloud when you have a connection — the cloud is a convenience, not a bottleneck.
- 4
Restore to a fresh device
On a new machine, sign in, confirm the emailed one-time code, and restore the full book from your encrypted backup to be up and running in minutes.
What's included
Sync model
- Full-book cloud sync
- Entirely optional & opt-in
- Offline-first by design
- Orthogonal to local unlock
Isolation & encryption
- Per-account isolated backup
- Encrypted in the cloud
- No shared tenancy of your data
- Email-OTP at new-device enrolment
Recovery
- Fresh-device restore
- Complete book, not a fragment
- Running again in minutes
- Off-site safety net
Who it's for — a growing business that wants an off-site backup and the freedom to move to a new PC without losing a single voucher — while still working at full speed on days the internet is down.
Local by design
Built for how Indian businesses actually work
This is not a foreign template with a rupee sign bolted on. The defaults, the workflows, and the vocabulary match the way businesses across India run their books.
₹ and Indian number formatting
Amounts read in the lakh–crore grouping you expect, with the rupee everywhere — no re-formatting foreign templates.
Financial year Apr–Mar
The financial year runs April to March by default, so opening balances, carry-forward, and year-end all line up with Indian practice.
The GST return cycle
HSN/SAC, tax categories, the tax registers, GSTR-1, GSTR-3B, e-invoice and e-way bill are built around the return cycle you file, not a generic tax module.
Multi-company & branch
Run several firms and branches from one install, each with its own books, series, and financial years kept cleanly apart.
Job-work reality
Delivery challans and job-work rates match how textile and manufacturing businesses actually send material out and get it back.
Keyboard-first data entry
Designed for high-volume typists: every action has a shortcut so an experienced operator never reaches for the mouse.
Speed you can feel
Why a local desktop app beats cloud SaaS on latency
A cloud accounting tool sends every keystroke and lookup on a round-trip to a server — and you feel every millisecond of it. Acronix Books runs against a local SQLite database on the same machine as your hands, so there is no network in the critical path. The result is software that keeps up with an experienced operator instead of making them wait.
That local-first architecture is what makes the whole product feel instant, from the first voucher of the day to the last report at closing.
< 200ms
Common actions
Opening a voucher, saving, switching company — all under a fifth of a second.
< 50ms
Hot queries
Reports and lookups read straight from local storage, not a distant server.
1 frame
Keyboard shortcuts
Every action has a shortcut that fires in a single frame — no perceptible lag.
50k+
Vouchers / FY
Virtualized lists render only what is on screen, so a full year scrolls without stutter.
Questions
Everything you might be wondering
Straight answers on data safety, offline use, GST, cost, and getting set up.
Is my data safe, and where is it stored?
Your books are stored in a local database on your own computer, encrypted at rest with SQLCipher AES-256. The encryption key is protected by an envelope key vault: a scrypt-derived key-encryption key wraps per-user key slots, and a recovery code lets you regain access if needed.
Access is gated by encrypted login and unlock, role-based permissions, and idle auto-lock, and a tamper-evident audit hash chain makes changes detectable. You hold the keys — nobody can read the file on disk without your credentials.
Does it work offline?
Yes — completely. Acronix Books is offline-first: every screen, voucher, report, and export runs against your local database with no internet connection required. There is no cloud round-trip in the critical path, which is a big part of why common actions land in under 200ms.
Cloud sync is entirely optional. When you turn it on, the app still works fully offline and reconciles with the cloud only when you have a connection.
Is it free?
It is free to try. Every feature is unlocked for a 14-day trial with no card required; after that it is ₹11,999 a year plus GST for the single plan. Your books live in an encrypted file on your own machine, so even without a subscription you keep full read and export access forever — only new entries stop.
Which GST returns and documents are supported?
Invoicing is GST-ready from the first entry, with HSN/SAC codes and tax categories applied automatically. The GST module gives you the Sales, Purchase, Output Tax and Input Tax registers and a rate-wise HSN summary, plus GSTR-1 (outward supplies) and GSTR-3B (summary) — both exported to Excel in the government offline-utility layout.
You can also generate e-invoice and e-way bill data from the same voucher, so IRN and transport documents come from your books instead of a separate re-entry.
Can I import my data from Tally?
A dedicated Tally import is not part of the current early-access release. In the meantime you can set up your companies, ledgers, account groups, and item masters directly, and begin fresh books — most businesses start Acronix Books at the beginning of a financial year or period for a clean cut-over. Watch the changelog for data-migration tooling as the product matures.
Does it support multiple users and roles?
Yes. Acronix Books has capability-based access control with five role levels — Viewer, Operator, Accountant, Admin and Owner — so each user gets their own encrypted login and a permission level that scopes what they can see and do. Idle auto-lock protects a shared machine when someone steps away, and the tamper-evident audit hash chain, login log and voucher audit record who changed what.
Can I manage more than one company?
Yes. A single install can hold multiple companies, and you can work across multi-company, branch, and financial-year combinations from one place. Each company keeps its own ledgers, voucher series, and Apr–Mar financial years cleanly separated.
What are the system requirements and which operating systems are supported?
Acronix Books is a desktop application. Windows 10 and 11 (64-bit) are supported today with a one-click installer of roughly 80 MB, and Linux ships as a universal AppImage plus a .deb for Debian and Ubuntu. The macOS build is in the pipeline and coming soon.
Because it runs locally, it is comfortable on ordinary business hardware and scales to 50,000+ vouchers per financial year without slowing down.
How do updates work?
The Windows app auto-updates itself once installed — you install once and it keeps itself current, so you always have the latest fixes and features without manually re-downloading. New releases are documented in the changelog.
Is cloud sync required, and is my cloud data isolated?
Cloud sync is fully optional and opt-in — the app is designed to work end-to-end without it. If you do enable it, you get full-book sync to a per-client isolated, encrypted cloud backup that only your client can read; there is no shared tenancy of your data.
That backup also powers fresh-device restore: sign in on a new machine and recover your complete book in minutes.
See it run on your own books
Free 14-day trial, no card. Install in seconds — it auto-updates from there.