DoliTax — Corporate tax provision, VAT checks and tax add-backs

Estimate your corporate income tax provision and review VAT figures directly in Dolibarr. DoliTax brings together the profit-to-tax reconciliation, tax add-backs and a VAT grid by period, with detailed figures for management reviews and discussions with your accountant.

Three views to understand your figures

• Corporate tax provision: review profit, add-backs, taxable profit and estimated tax, with bracket-by-bracket calculations and a configurable scale for each fiscal year.
• VAT checks: review net bases, output VAT, input VAT and the balance by month, quarter or year. Accrual, cash and mixed regimes are available. Rates outside your configured list are flagged for review.
• Tax add-backs: configure account rules and calculate non-deductible vehicle depreciation from annual per-vehicle details.

A vehicle calculation you can check

Illustrative example: acquisition value €30,000, annual depreciation €6,000, applicable cap entered €18,300 gives an add-back of €2,340. The cap applies to each vehicle’s acquisition value. You enter the booked depreciation and the applicable cap; the module checks that the schedule matches the account amount.

Explicit calculation status

The data source is displayed. A missing scale, a failed data query or incomplete vehicle details makes the affected calculation “Not calculable”. Calculations run on your server, without an external service.

Version 1.0.1 also corrects French customer gifts: the VAT recovery threshold no longer triggers an automatic corporate tax add-back. Non-recoverable VAT and other deductibility conditions require a separate review.

Configure it for your business

France, Switzerland and Morocco presets provide editable rates, accounts, caps and tax scales. Review the settings for your fiscal year and enter annual vehicle details. Designed for companies subject to corporate income tax, finance teams and accountants who want to track a provision using available data.

Scope: calendar-year pre-calculation and management control. The module does not fill in or electronically submit a CA3 or a tax return. Offset fiscal years, reverse charge, import or margin VAT, VAT that is non-recoverable by nature, loss carry-forwards, tax credits and additional contributions are not automated. Without a usable general ledger, the flow-based mode provides a management estimate requiring a review of fixed assets and closing entries.

License, updates and support

€149 excluding VAT, one-time purchase. Lifetime access to module downloads and updates. Support: support@arcchester.com. French and English interface.

Compatibility: Dolibarr 18–24; PHP 7.4 minimum. Version 1.0.1 checked on Dolibarr 18.0.5 / PHP 8.1 and Dolibarr 24.0.0 / PHP 8.2: 158 calculation assertions passed on each version, plus checks that reactivation preserves settings.

Upgrading from 1.0.0: replace the files, then disable and re-enable DoliTax to create the vehicle table. Settings are retained. Complete the annual vehicle schedule before using the provision again.