---
name: ms-corporate-income-tax
description: "Montserrat corporate income tax reference checked for 2026 against the official Income and Corporation Tax Act consolidation. Covers the standard company rate, the distinction between accounting profit and chargeable income, selected expense restrictions, annual return requirements and instalment payments. Includes an illustrative tax reconciliation and a separate prior-assessment instalment example. Use after company residence, taxable scope and the relevant accounting period have been established. Identifies remitted branch profits as a separate withholding issue. Incentives, capital allowances, losses, treaty relief and later legislative changes require further review. This source-cited draft is not accountant-attested."
license: "AGPL-3.0-or-later (code) / OpenAccountants Guide License v1.0 (content)"
metadata:
  source: openaccountants
  openaccountants_url: "https://www.openaccountants.com/skills/ms-corporate-income-tax"
  jurisdiction: "MS"
  tax_year: "2026"
  last_updated: "2026-10-23"
  authored_by: "Ryan Duguid"
  trust_label: "Accountant-authored"
  review_status: "pending_review"
---

# Montserrat corporate income tax

## Scope

Source-cited draft checked 22 October 2026. References below are to the [Income and Corporation Tax Act, Chapter 17.01, revised 1 January 2025](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf). This Guide applies the standard company framework after taxable status and the relevant basic year have been established. It does not decide residence, source, exemptions or eligibility for a special incentive.

## Rate and tax base

Section 36 sets a 30% rate on the chargeable income of companies, building societies and bodies of persons. The tax base is chargeable income, not revenue and not automatically the accounting profit. [Section 36](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf).

Section 13 permits qualifying expenses incurred wholly and exclusively in producing income, subject to its detailed conditions. For example, the interest provision requires satisfaction that the borrowed capital was used to acquire the income. Section 16 excludes private expenditure, expenditure not incurred for the qualifying income purpose, and capital amounts described there. Sections 14–15 contain separate capital deduction rules that require asset-specific analysis. [Sections 13–16](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf).

Maintain a reconciliation that starts with accounts profit, identifies each tax adjustment, cites the applicable provision and retains the underlying evidence. Do not use the following illustration to decide whether a disputed cost is deductible.

## Illustrative computation

Assume the company has already established the following amounts, with no other reliefs or adjustments:

| Reconciliation item | EC$ |
|---|---:|
| Accounting profit before tax | 80,000 |
| Add back established non-deductible private expenditure included in accounts | 5,000 |
| Chargeable income | 85,000 |
| Tax at 30% | 25,500 |

The example isolates the effect of one agreed disallowance. It does not model depreciation, capital allowances, losses or tax credits. If those items exist, complete the relevant statutory analysis before treating the result as final.

## Return and payment

Section 43 requires the income return by 31 March in the year of assessment, unless another date is prescribed, and requires a calculation of the tax payable. The employment/pension exception in subsection (4) is not the ordinary company deadline. Check any applicable current extension or prescribed date before filing. [Section 43](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf).

Section 50(1) sets the balance-payment deadline at the later of 30 June in the assessment year and 45 days after service of the assessment notice, excluding the separately governed source deductions. Section 50(2) requires a person carrying on a trade to pay an amount equal to the last assessed tax in three equal instalments during February, April and June. The Comptroller can adjust this where a loss or reduced profit is demonstrated to their satisfaction. [Section 50](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf).

For last assessed tax of EC$24,000, the three equal instalments are EC$8,000 each. If final tax is EC$25,500 and those are the only payments or credits, the remaining balance is EC$1,500. A lower accounting forecast alone is not the statutory approval for reducing instalments.

## Branch and unresolved issues

Section 39(4) separately addresses withholding on remitted Montserrat business profits of non-resident companies, in addition to income tax, with a provision for amounts shown not to have been remitted. Do not assume payment of the 30% company tax settles that obligation. [Section 39(4)](https://www.gov.ms/wp-content/uploads/2026/02/17.01-Income-and-Incorporation-Tax-Act.pdf).

Residence, special regimes, related-party payments, capital deductions, losses, group structures and international relief need separate Guides and verification. A post-consolidation amendment audit and independent accountant review remain outstanding; this is not comprehensive corporate coverage.

> Contributed by Ryan Duguid.

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---

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## Today's figures and who stands behind this skill

This file is an AI skill (tax rules your AI follows) from OpenAccountants, copied on 2026-10-23. Rates, thresholds and deadlines change. For the current version of this skill, its official sources and the named accountant (if any) who stands behind it, call `get_skill` with slug `ms-corporate-income-tax` on the OpenAccountants connector (https://www.openaccountants.com/connect), or read https://www.openaccountants.com/skills/ms-corporate-income-tax. If neither is available, confirm every figure against the official source pages cited above before relying on it.