Guide to navigating cross-border mergers and acquisitions (M&As) for UK businesses
Navigate the complexities of cross border mergers and acquisitions with expert guidance. Discover strategies for successful international M&A deals.
Are you planning to do business in Delaware? Then it’s essential to understand how corporate income tax (CIT) works and what it means for your company.
In this guide, we’ll break down everything you need to know about corporate taxes in Delaware, from setting up your business to staying compliant. Whether you’re launching a new venture or expanding your business, understanding your tax obligations is key to running a successful operation.
And if you're looking for smart ways to save money and manage international payments, we’ll also show you how a Wise Business account can help simplify cross-border transactions and keep your finances running smoothly.
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This publication is provided for general information purposes and does not constitute legal, tax or other professional advice from Wise Payments Limited, its subsidiaries or affiliates, and it is not intended as a substitute for obtaining business advice from a tax advisor or any other professional.
As of 2025, Delaware's corporate tax rate is 8.70%¹. This rate applies uniformly, as Delaware does not have a graduated corporate tax system with varying brackets. Instead, all taxable corporate income is subject to the same rate. In addition to Delaware's corporate tax rate, a franchise tax is levied on entities incorporated in the state, regardless of whether they conduct business within the state.2
Every domestic or foreign corporation doing business in Delaware, not specifically exempt, is required to file a corporate income tax return (Form CIT-TAX)1. This tax is based on an equally weighted three-factor method of apportionment, with factors being property, wages, and sales in Delaware as a ratio of property, wages, and sales everywhere. Effective January 1, 2020, the apportionment calculation for Delaware is based entirely on the sales or gross receipts factor on the Delaware corporate income tax return1.
Corporations operating inside and outside of Delaware are treated differently. Domestic corporations, incorporated in Delaware, are subject to the state's corporate income tax on earnings from business activities conducted within Delaware. Additionally, they must pay the annual franchise tax and file an annual report by March 1 each year². Foreign corporations conducting business in Delaware are required to file Form CIT-TAX to report income earned within the state².
For corporations doing business in Delaware, you are required to file a Corporate Income Tax Return using Delaware Corporate Income Tax Return Form CIT-TAX3. Delaware corporate income tax returns are due in the case of a calendar year taxpayer, on or before April 15 of the following year2. A federal extension automatically extends the Delaware due date, but an extension of time to file is not an extension of time to pay1.
Delaware permits businesses that have a net operating loss in one year to carry back no more than $30,000 for each of the prior 2 years to offset any profit. The carryforward period is 20 years. The amount of the net operating loss recognized for Delaware corporate income tax purposes is only to the extent of the amount recognized for Federal purposes.1
Delaware requires every corporation filing a Delaware corporate income tax return to attach a completed copy of a pro forma federal tax return, including all schedules and attachments.1 The forms can be found at www.irs.gov.
Corporate income tax returns filed late are subject to a penalty of 5% per month, plus interest of 0.5% per month from the original due date until paid.1
Corporations expecting to have a Delaware Corporate Income Tax liability of $500 or more for the current year are required to make estimated tax payments.4 These payments are generally due in four installments: 50% by the 1st day of the 4th month of the tax year, 20% by the 15th day of the 6th month, 20% by the 15th day of the 9th month, and 10% by the 15th day of the 12th month. Failure to pay enough estimated tax by the due dates can result in penalties and interest.4
Let's say your company has an annual turnover of $1.5 million and operates with a profit margin of 10%, giving it a taxable profit of $150,000. At Delaware's standard corporation tax rate of 8.7%, the tax owed would be:
$150,000 × 8.7% = $13,050
When expanding your business to the US, the right financial tools will make the process smoother. Using a platform like Wise Business makes it easy to expand internationally with local USD account details. A multi-currency account allows businesses to pay for incorporation costs, registration fees, and government taxes in local currency without paying high exchange rate fees.
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Here are some practical steps to help your company meet Delaware’s tax requirements:


Delaware is a powerful combination of economic potential, strategic location, and elite legal infrastructure that attracts businesses worldwide.
The state’s median household income of $81,361 exceeds the U.S. national average of $77,719, reflecting strong consumer purchasing power. More residents hold bachelor’s degrees (36.5 % vs. 36.2 %), reflecting a skilled labour pool5 6.
Although employment runs slightly below the national average (59.6 % vs. 60.6 %), that gap creates opportunities for companies hoping to retain top-quality talent. Located along the I-95 corridor in the Mid-Atlantic, Delaware places businesses within an overnight radius of over 100 million people. Such proximity reduces supply-chain friction and speeds market access7.
Often dubbed the “Corporate Capital of the World,” Delaware hosts more than two million business entities. Nearly 67.6% of Fortune 500 companies and approximately 80% of U.S. IPOs in 2023 were incorporated there.8 That volume stems from Delaware’s robust legal system. The Delaware General Corporation Law is one of the most advanced corporate statutes. The Delaware Court of Chancery handles corporate disputes without juries and benefits from immense judicial experience. All these are factors that many of your clients’ peers value highly.
Delaware’s well-established network of corporate tax advisors, experienced tax managers, and transparent regulatory framework helps businesses confidently navigate corporate tax compliance. The state’s predictable legal environment and accessible guidance make it easier for companies to manage corporate income tax obligations and maintain accurate tax accounting practices.
The steps required to set up a business in Delaware are¹³:
Need help with the LLC formation process itself? Check Wise’s How to Start an LLC in Delaware guide for practical steps, cost estimates, and tips for non-residents to launch smoothly.
Setting up a company in Delaware is relatively simple, provided you follow the required steps. Here’s what you’ll need:9
Note: Businesses formed after January 1, 2024, must comply with Beneficial Ownership reporting under the Corporate Transparency Act (CTA), which requires reporting beneficial owner information to the Financial Crimes Enforcement Network (FinCEN). In addition, many banks and financial institutions require certified copies or a Certificate of Good Standing before opening accounts or granting credit.
Types of business entities in Delaware:10
Delaware’s business-friendly legal system, reliable corporate tax rules, and access to resources like the corporate tax helpline make it a prime location for incorporation. Companies can also consider corporate tax outsourcing to simplify compliance, implement strategies on how to reduce corporate tax, and ensure timely filings to avoid late corporate tax filing penalties.
For multinational businesses, Delaware’s framework also aligns with evolving global minimum tax rates under the corporate tax 2025 regulations.
Here are some of the best strategies to ensure compliance with local tax laws, save more money, and reduce tax burdens.
Researching corporate tax is a crucial step when expanding your business into a new country. The next step is setting up the financial infrastructure to handle the complexities of operating across borders, from managing multi-currency cash flow to mitigating FX risk.
The Wise Business account provides the financial tools to make your international expansion to Delaware efficient and simple. It's the one account for managing your money globally.
With a Wise Business account, you can:
Pay suppliers and initial fees: Pay suppliers, global payroll, and one-off incorporation costs in the local currency.
Get paid like a local: Use local account details for 8+ major currencies to easily receive payments from customers or investors.
Manage your money across borders: Hold and exchange 40+ currencies in one account, always with the mid-market exchange rate and low, transparent fees.
Streamline your accounting: Integrate with tools like Xero or QuickBooks to simplify tracking your company's international finances.
Empower your team: Provide multi-user access for your finance team and issue expense cards for international spending.
Wise is designed to support every step of your journey, from paying your first registration fee to receiving international payments and managing your global treasury.
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A corporation is liable for Delaware’s 8.7% corporate income tax if it conducts business in the state, a condition known as having "nexus". This includes activities like having an office, employees, or deriving income from sources within Delaware. Companies incorporated in Delaware but operating elsewhere are not subject to income tax but must still pay the annual Franchise Tax.
Yes, Delaware offers various tax credits to encourage business growth and investment. These include credits for creating new jobs, investing in research and development (R&D), and locating a business in specific revitalisation zones. These incentives can significantly lower a company's effective tax rate11.
Delaware generally follows federal guidelines regarding dividends. A significant portion of dividends received from other corporations may be deductible. Furthermore, Delaware law provides a 100% exclusion from taxable income for dividends received from certain foreign corporations, which is particularly beneficial for multinational businesses.12
First, you must incorporate your company with the Delaware Division of Corporations. Once incorporated, you must register your business with the Delaware Division of Revenue. This can be done efficiently through the Delaware One Stop Business Registration and Licensing System, which allows you to register with multiple state agencies simultaneously.
A major pitfall is confusing the annual Franchise Tax with the corporate income tax. All Delaware corporations must pay the Franchise Tax, regardless of business activity. Another common mistake is failing to file an income tax return (even a "zero income" return) if you're incorporated in Delaware but do no business there. Finally, neglecting to make quarterly estimated tax payments when required can lead to penalties.
Sources used in this article:
Sources last checked 22/08/2025
*Please see terms of use and product availability for your region or visit Wise fees and pricing for the most up to date pricing and fee information.
This publication is provided for general information purposes and does not constitute legal, tax or other professional advice from Wise Payments Limited or its subsidiaries and its affiliates, and it is not intended as a substitute for obtaining advice from a financial advisor or any other professional.
We make no representations, warranties or guarantees, whether expressed or implied, that the content in the publication is accurate, complete or up to date.
Navigate the complexities of cross border mergers and acquisitions with expert guidance. Discover strategies for successful international M&A deals.
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