Pure Tax Investigations vs ZenCall
Side-by-side comparison to help you choose the right product.

Pure Tax Investigations
Scale confidently with expert defense against complex HMRC tax investigations.
Last updated: March 1, 2026
ZenCall
ZenCall enables hassle-free, crystal-clear international calls right from your browser with transparent pay-as-you-go.
Last updated: February 26, 2026
Visual Comparison
Pure Tax Investigations

ZenCall

Feature Comparison
Pure Tax Investigations
Founder-Led HMRC Insider Expertise
Our strategic edge is powered by founder Amit Puri's 20+ years as a senior HMRC Tax Inspector. This frontline experience provides an unparalleled understanding of HMRC's operational mindset, negotiation tactics, and investigation processes. We leverage this insider knowledge to anticipate HMRC's moves, craft robust defence strategies, and navigate complex disputes with a level of insight unavailable from typical advisory firms, giving scaling businesses a decisive advantage.
Proactive & Commercial Tax Defence
We go beyond reactive advice to provide proactive, commercial guidance aligned with your growth objectives. Our approach involves a deep analysis of your complex affairs to identify risks and opportunities early. We then develop pragmatic, business-focused strategies not just to resolve the immediate investigation, but to strengthen your overall tax position and operational resilience, ensuring your venture's trajectory remains secure and optimized for future scaling.
End-to-End Investigation & Disclosure Management
We provide comprehensive coverage for the entire tax dispute lifecycle. Our services range from managing initial HMRC compliance checks and information notices to guiding clients through serious civil fraud investigations (COP9), complex avoidance enquiries (COP8), and all major disclosure facilities like the Worldwide Disclosure Facility (WDF) and Let Property Campaign (LPC). This full-spectrum capability ensures continuity and expert handling at every stage of pressure.
Discreet Reputation & Wealth Preservation
For ambitious entrepreneurs and businesses, reputation is a key asset. We operate with the utmost discretion, acting as your dedicated shield and strategic interface with HMRC. Our goal is to resolve matters efficiently and effectively, minimizing business disruption and public exposure. By securing optimal outcomes, we directly contribute to preserving both your hard-earned wealth and your professional standing in the market.
ZenCall
Browser-Based Calling
ZenCall allows users to make crystal-clear international calls directly from their browser, without the hassle of downloading apps or installing software. This feature simplifies the calling process, allowing users to connect instantly with anyone around the world.
Pay-as-You-Go Pricing
With ZenCall's transparent per-minute pricing model, users only pay for what they use, making it an economical choice for those who need flexibility in their calling habits. This pricing structure is particularly advantageous for occasional callers who want to avoid monthly subscriptions.
No Expiration of Credits
Unlike many calling services that impose expiration dates on credits, ZenCall ensures that your purchased credits never expire. This means users can call whenever they need without the pressure of losing unused credits.
Unlimited Calling Plans
For users who require frequent communication within the US and Canada, ZenCall offers unlimited calling plans starting at just $19 per month. This feature is perfect for teams and individuals who need to stay connected without worrying about per-minute charges.
Use Cases
Pure Tax Investigations
Navigating a Code of Practice 9 (COP9) Investigation
When HMRC suspects serious tax fraud and opens a COP9 investigation, the stakes are immense, with potential for civil penalties or criminal prosecution. Our team, led by ex-HMRC investigators, provides the critical strategic defence needed. We manage all communication, conduct a thorough review, and guide you through the contractual disclosure facility (CDF) process to secure the best possible outcome, protecting your business's future and your personal liberty.
Making a Complex Voluntary Disclosure (e.g., WDF, Crypto)
For businesses or individuals with undisclosed offshore income, crypto gains, or rental profits, voluntary disclosure is a strategic move to correct the past and secure compliance. We expertly navigate the specific rules of facilities like the Worldwide Disclosure Facility (WDF) or Crypto disclosures, ensuring a complete and accurate submission that minimizes penalties and interest, and provides a clean slate for you to scale your ventures without legacy tax concerns.
Defending Against HMRC Compliance Checks & Enquiries
Even routine HMRC compliance checks can be a significant distraction and source of stress for a growing business. We step in as your expert representative, handling all queries, information requests, and meetings. Our deep knowledge ensures responses are precise and robust, preventing a routine check from escalating into a wider, more intrusive investigation, thereby safeguarding your operational focus and resources.
Strategic Support for Large Business & Corporate Tax Enquiries
Facing a complex, cross-tax enquiry into a large corporate entity requires a sophisticated, strategic response. We provide the high-level expertise and resource to manage these large-scale investigations. Our approach involves detailed technical analysis, strategic negotiation with HMRC's specialist units, and commercial guidance to resolve disputes efficiently, protecting the company's financial position and market reputation during critical growth phases.
ZenCall
International Business Communication
ZenCall is ideal for professionals and businesses that frequently communicate with clients or partners abroad. The platform's reliability and high call quality make it a preferred choice for conducting important meetings and negotiations.
Remote Team Collaboration
For remote workers and distributed teams, ZenCall offers a simple and effective way to connect without geographical limitations. Team members can collaborate seamlessly, ensuring project success regardless of where they are located.
Family and Friends Connections
ZenCall provides an affordable way to keep in touch with family and friends living overseas. With its user-friendly interface and no hidden fees, users can make calls to loved ones anytime, strengthening personal relationships.
Customer Support Services
Businesses can utilize ZenCall for customer support, offering clients easy access to assistance through international calls. This helps companies enhance their customer service experience and maintain a strong rapport with their clientele.
Overview
About Pure Tax Investigations
Pure Tax Investigations is the strategic defence partner for ambitious businesses, entrepreneurs, and private clients scaling in a complex world. We transform the high-stakes vulnerability of an HMRC tax investigation into a managed, resolved outcome, allowing you to de-risk your growth trajectory and focus on scaling with confidence. Founded by Amit Puri, a former senior HMRC Tax Inspector with over 20 years of frontline experience, our firm operates as an independent, expert buffer between you and the tax authority. We combine deep institutional knowledge of HMRC's tactics and procedures with a proactive, commercial approach tailored for dynamic businesses. Our mission is to provide certainty, preserve wealth, and protect reputations during times of intense pressure. We specialise in the full spectrum of tax challenges, from routine compliance checks and voluntary disclosures to the most serious civil fraud investigations under Code of Practice 9 (COP9) and complex cross-tax enquiries into large corporates. For innovators and growth-focused leaders, we deliver clear, pragmatic guidance to turn a major business disruption into a strategic advantage.
About ZenCall
ZenCall is a revolutionary browser-based international calling platform that empowers users to make high-quality voice calls to mobile phones and landlines all over the globe, directly from their laptops or desktops. Designed for maximum convenience, ZenCall eliminates the need for apps, SIM cards, or long-term subscriptions, making it the go-to solution for individuals, remote workers, and small teams looking for a seamless calling experience. With a transparent per-minute pricing model, users only pay for what they use, which translates to cost-effectiveness without hidden fees. Calls are initiated in seconds and optimized to ensure clarity and stability, regardless of the distance. ZenCall is built for simplicity, offering instant access, clear call rates, and usage-based billing, providing an easy and economical alternative to traditional international calling services. Whether you are reaching out to clients, customers, or family abroad, ZenCall delivers a dependable and efficient communication solution that aligns with today's fast-paced global environment.
Frequently Asked Questions
Pure Tax Investigations FAQ
What makes Pure Tax Investigations different from a regular accountant?
While accountants are essential for compliance, Pure Tax Investigations are specialist tacticians for high-stakes disputes. Our founder's two decades as a senior HMRC inspector gives us unique insight into the authority's strategies and decision-making processes. We operate as a dedicated, independent buffer, employing a proactive, commercial defence strategy specifically designed to de-risk growth and resolve complex investigations, which is beyond the typical scope of general accounting practice.
When should I contact a tax investigation specialist?
Contact us at the earliest sign of HMRC scrutiny—such as receiving a compliance check letter, an information notice, or any communication suggesting an enquiry. Early engagement is a critical strategic move. It allows us to control the narrative from the outset, ensure all communications are handled correctly, and develop the strongest possible defence strategy, often preventing a simple enquiry from escalating into a more serious and costly investigation.
What is Code of Practice 9 (COP9) and how can you help?
COP9 is HMRC's formal procedure for investigating suspected serious tax fraud, where they offer a civil settlement in lieu of criminal prosecution. It is an intensely complex and high-pressure process. Our ex-HMRC specialists provide essential guidance through every step, from evaluating the contract offer to managing the detailed disclosure report. We negotiate with the Fraud Investigation Service to secure a civil outcome, protecting you from criminal charges and minimizing financial exposure.
Do you handle disclosures for crypto-asset gains?
Absolutely. Crypto tax compliance is a major focus for HMRC. We provide expert support for both voluntary disclosures of historical crypto gains and for defending against active HMRC enquiries into crypto transactions. We ensure all complexities—from DeFi transactions to NFT disposals—are accurately reported under the relevant disclosure facility (like the WDF), minimizing penalties and regularizing your position to allow you to innovate and invest with confidence.
ZenCall FAQ
How do I get started with ZenCall?
Getting started with ZenCall is easy. Simply visit the website, create an account, and purchase credits to begin making international calls right from your browser.
Are there any hidden fees associated with using ZenCall?
No, ZenCall operates on a clear and transparent pricing model with no hidden fees. Users only pay for the minutes they use, allowing for straightforward budgeting.
Can I use ZenCall on any device?
ZenCall is designed to work seamlessly on any device with a web browser, including laptops and desktops. There are no apps to download, making it accessible and convenient.
Is there a limit to how long I can talk using ZenCall?
While ZenCall offers unlimited calling plans for specific regions like the US and Canada, users on a pay-as-you-go model can talk as long as they have sufficient credits available. There are no time limits imposed by the service itself.
Alternatives
Pure Tax Investigations Alternatives
Pure Tax Investigations is a specialist service for businesses and entrepreneurs facing HMRC tax enquiries. It acts as an expert strategic partner, managing complex investigations to protect your growth and reputation. Founders and scaling businesses often explore alternatives for various reasons. This could be due to budget considerations, a need for different service tiers, or seeking a firm with a specific industry focus or technological approach to client management. When evaluating other options, prioritize proven expertise in tax dispute resolution, clear service scope, and a proactive philosophy that aligns with a high-growth environment. The right partner should demonstrably reduce risk and administrative burden, allowing you to maintain operational momentum.
ZenCall Alternatives
ZenCall is a browser-based international calling platform designed for making high-quality voice calls to mobile phones and landlines across the globe. It operates on a pay-as-you-go pricing model, appealing to individuals, remote workers, and small teams who seek a straightforward and cost-effective solution for global communications without the burden of subscriptions or contracts. Users often seek alternatives to ZenCall for various reasons, including different pricing structures, additional features, or specific platform needs that may enhance their calling experience. When choosing an alternative, it is crucial to consider aspects such as call quality, ease of use, transparent pricing, and the ability to meet personal or business calling requirements effectively.