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Corporate Tax Software with Client Management (2026)

Last updated: April 2026

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18 software options

Xero logo

Cloud-based accounting software for small businesses

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Xero is an award-winning online accounting software designed for small business owners and accountants, available on any computer or mobile device with an internet connection. Simplify business admin and get a range of financial insights to help you make better decisions for your business.

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Tax1099.com logo

Data protection solution through 256-bit encryption

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Tax1099 provides secure and reliable data protection through 256-bit encryption and automated error checking. Integrated with various accounting software options and an API available for integration with other software, Tax1099 offers flexibility and convenience for users.

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Taxprep logo

Tax preparation software

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TaxPrep is a cloud-based tax preparation software system for small businesses. It helps companies with data entry, diagnostics, audit reviews, quality assurance and more.

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MyTAXPrepOffice logo

Professional Tax preparation software

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MyTAXPrepOffice is a professional tax preparation software that helps businesses prepare and file tax returns on a unified platform. Enjoy mobility, accuracy, ease of use, and affordability.

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ProSeries Tax logo

Cloud-based tax management software for accounting firms

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Intuit ProSeries Tax is a cloud-based tax management software designed to help accounting firms prepare returns, file e-forms, and track tax filing errors through diagnostic tools. Features include multi-user access, e-signature, status tracking, multi-year e-filing, encrypted files & data import.

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Inkle logo

US Accounting and Tax Automation for Startups

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For bookkeeping, taxes, and compliance, hundreds of US businesses use Inkle. For startups to obtain cost-effective, high-quality accounting services, Inkle is an all-in-one SaaS stack.

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Capium logo

Accounting platform for payroll specialists & bookkeepers

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Capium is a tax-compliant cloud-based accounting solution with data entry and corporate tax filing capabilities for filing UK taxes. It is a fully integrated suite of core accounting services, including bookkeeping, payroll, accounts production, corporation tax, self-assessment, practice management, anti-money laundering, and more.

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Lacerte Tax logo

Software for complete tax returns

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Lacerte Tax is a complete corporate tax return software to handle complex to simple returns. It features comprehensive form coverage, advanced diagnostics, and online access.

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Longview Tax logo

Corporate tax management and reporting solution

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Longview Tax is a corporate tax management solution that provides businesses with tools for managing tax strategies, collecting data, provisioning, and reporting on taxes. The cloud-based platform also offers tools for tax planning and helps businesses create data-driven strategies.

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TaxCalc logo

Tax practice management tool for accountants & tax advisors

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TaxCalc is a tax practice management solution designed to help accountants, tax advisors, and finance professionals manage clients, calculate tax returns, prepare financial statements, and more. It enables finance teams file clients’ tax returns, validate entries, and monitor due dates.

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UltraTax CS logo

Corporate tax software for tax professionals

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UltraTax CS is a cloud-based professional tax software designed to help tax preparers automate corporate tax workflows and streamline document management. It offers multi-monitor flexibility, allowing businesses to view forms, input, diagnostics, prior year input, and more on up to 4 separate monitors at the same time.

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BTCSoftware logo

Helping accountants succeed through software since 1999.

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BTCSoftware is perfect for accountants and finance professionals who need their software to easily handle their tax work and deadlines.

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Keeyns logo

Total confidence in every tax process.

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Keeyns is a Tax Management Platform that allows multi-entity companies to centralise all tax deadlines and processes in one place.

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Taxjoy logo

Secure communications hub for tax professionals

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Taxjoy facilitates seamless and secure communication between tax professionals - including accountants, enrolled agents, tax attorneys and tax advisors - and their clients, enabling them to share and collaborate on any tax documents

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Macompta.fr logo
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French-language accounting, invoicing & collection solution

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macompta.fr is a modular accounting, invoicing & collection web-based solution. It is aimed at entrepreneurs, small businesses and associations based in France.

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getW9 logo
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Web-based corporate tax system for handling W-9 forms

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getW9 is an online system that automates and streamlines the IRS Form W-9 collection and management processes.

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Mekari Klikpajak logo
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Cloud-based corporate tax solution

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Klikpajak is a cloud-based solution for emerging and established enterprises across Indonesia. Mekari Klikpajak is an official online tax payment and reports solution from the Indonesian Directorate General of Taxes.

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KoinX logo
(0)

Cloud-based tax practice management tool for investors.

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KoinX is a cloud-based tax practice management solution, which helps small to large businesses calculate and handle crypto taxes. The platform provides various features such as portfolio management, reporting, data import/export, APIs, and investment tracking. It also facilitates third-party integration with various cryptocurrency applications such as Alpaca, BitForex, Coinbase, Fantom, and more.

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