NTA 2025 13-step computation engine
Submit your company's financial figures and Numens runs the full 13-step CIT computation: adjusted profit, capital allowances, interest deduction cap (30% of EBITDA), R&D relief, loss relief, minimum tax check (0.5% of revenue), and final tax payable after WHT credits.
POST https://api.taxstreem.com/v1/numens/cit/compute
| Field | Type | Description |
|---|---|---|
| tenant_id* | string | Your TaxStreem tenant ID. |
| business_id* | string | The company being assessed. |
| tax_year* | integer | Assessment year e.g. 2025. |
| revenue_ngn* | float | Total gross revenue. |
| profit_before_tax_ngn* | float | Accounting profit before tax. |
| wht_credits_ngn | float | WHT credits to offset CIT payable. |