Pure Tax Investigations vs ZenCall

Side-by-side comparison to help you choose the right product.

Pure Tax Investigations logo

Pure Tax Investigations

We partner with you to expertly resolve complex HMRC investigations and protect your interests.

Last updated: March 1, 2026

ZenCall enables hassle-free international calling directly from your browser with transparent pay-as-you-go pricing.

Last updated: February 28, 2026

Visual Comparison

Pure Tax Investigations

Pure Tax Investigations screenshot

ZenCall

ZenCall screenshot

Feature Comparison

Pure Tax Investigations

Bespoke, Client-Centric Strategy

We believe every situation is unique. Our process begins with listening, ensuring we fully grasp your specific circumstances and concerns. Our team then collaborates to evaluate the details and formulate a tailored, pragmatic strategy designed to achieve the best possible commercial outcome for you.

Insider HMRC Knowledge and Experience

Our collaborative team is led by former HMRC senior inspectors, providing an unparalleled understanding of HMRC's internal processes, operational approaches, and mindset. This insider perspective is leveraged synergistically to navigate disputes efficiently and effectively, anticipating HMRC's actions.

Full-Spectrum Investigation & Disclosure Support

Our team offers comprehensive guidance across the entire spectrum of HMRC engagements. We work together to handle everything from routine compliance checks and complex COP9 fraud investigations to specialist disclosures for offshore assets, crypto gains, and property income, ensuring no aspect is overlooked.

A Dedicated Buffer and Robust Defence

We position ourselves as your independent, specialist intermediary with HMRC. Our team fights collaboratively on your behalf, managing all communications and negotiations to shield you from stress. We provide a robust defence, challenging HMRC where necessary to protect your wealth and aspirations.

ZenCall

High-Quality Voice Calls

ZenCall offers crystal-clear voice quality for all international calls, ensuring that conversations are smooth and uninterrupted. This quality is achieved through advanced technology that optimizes voice transmission, providing users with a reliable communication tool.

Browser-Based Convenience

With ZenCall, there is no need to download any applications. Users can make calls directly from their web browsers, making it easy to connect with anyone, anywhere, without the hassle of installations or compatibility issues.

Flexible Pricing Model

ZenCall operates on a transparent, pay-per-minute pricing system. This means users only pay for the minutes they consume, allowing for budget-friendly calling without hidden fees or surprise charges, making it ideal for occasional callers.

Unlimited Calling Plans

For those who frequently communicate within the U.S. and Canada, ZenCall provides unlimited calling plans starting at just $19 per month. This feature is perfect for teams or individuals who need to stay connected without worrying about minute limitations.

Use Cases

Pure Tax Investigations

Facing a Code of Practice 9 (COP9) Investigation

When HMRC suspects serious tax fraud and opens a COP9 investigation, the stakes are immense. Our team works with you to navigate this civil fraud procedure, guiding you through the disclosure process to regularise your affairs and seek the best possible settlement, avoiding criminal prosecution.

Managing a Worldwide Disclosure Facility (WDF) Submission

For clients with undeclared offshore income or gains, our specialists collaborate to prepare and submit a disclosure under HMRC's Worldwide Disclosure Facility. We ensure it is accurate, complete, and presented strategically to minimise penalties and bring your tax affairs into compliance.

Defending Against an HMRC Compliance Check or Enquiry

Even a routine HMRC enquiry can be stressful and time-consuming for business owners. Our team steps in as your representative, handling all queries, providing requested information, and working synergistically to resolve the check efficiently, limiting disruption to your business.

Resolving Complex Inheritance Tax or Trust Disputes

For private clients facing enquiries into residence, domicile, trusts, or inheritance tax planning, our experts provide clear, pragmatic advice. We work together to analyse complex structures and present robust arguments to HMRC, safeguarding family wealth and succession plans.

ZenCall

Connecting with Clients

Business professionals can leverage ZenCall to maintain strong communication with clients around the world. The platform enables seamless calls to international clients, fostering stronger relationships and enhancing collaboration.

Remote Team Communication

ZenCall is an excellent tool for remote teams that need to communicate effectively across different geographical locations. With its browser-based functionality, team members can easily connect for meetings or quick check-ins without logistical challenges.

Family and Friends Abroad

Individuals who have family or friends living overseas can utilize ZenCall to stay connected. The user-friendly interface and high call quality make it easy to share life updates and special moments, regardless of distance.

Education and Tutoring

Educators and tutors can use ZenCall to conduct lessons or consultations with students globally. The clear voice transmission ensures that learning is effective and engaging, facilitating a positive educational experience.

Overview

About Pure Tax Investigations

Pure Tax Investigations is a specialist advisory firm that acts as a dedicated, independent buffer between clients and HM Revenue & Customs (HMRC). We are a collaborative team of experts, led by former HMRC senior Tax Inspector Amit Puri, who bring over 20 years of high-quality, insider experience to every case. Our mission is to provide robust defence and clear, pragmatic guidance for business owners, entrepreneurs, and private clients facing the immense pressure of HMRC scrutiny. We understand that tax investigations and disclosures are inherently complex and deeply intrusive. Therefore, we work synergistically with our clients, listening first to fully understand their unique situation before evaluating and formulating a bespoke strategy. Our core value proposition is delivering certainty, peace of mind, and commercial results by leveraging our deep knowledge of HMRC's latest operational approaches to resolve disputes efficiently and protect our clients' wealth and aspirations.

About ZenCall

ZenCall is an innovative browser-based international calling platform that empowers users to make high-quality voice calls to mobile phones and landlines around the globe directly from their laptops or desktops. Designed for simplicity and efficiency, ZenCall eliminates the need for apps, SIM cards, or subscriptions, making it accessible to everyone. Its unique pay-as-you-go pricing model allows individuals, remote workers, and small teams to enjoy transparent, per-minute rates without being tied to long-term contracts. Calls can be initiated in seconds, ensuring seamless communication across various countries, with optimized clarity and stability for every conversation. ZenCall is the perfect solution for professionals and personal users alike, offering an easy and cost-effective alternative to traditional international calling services while ensuring that users only pay for what they use.

Frequently Asked Questions

Pure Tax Investigations FAQ

What makes Pure Tax Investigations different from my accountant?

While your accountant handles routine compliance, we are specialist tax investigation and dispute resolution experts. Our collaborative team, led by ex-HMRC inspectors, provides deep, insider knowledge of HMRC's investigation tactics. We act as a dedicated buffer and strategic defender during high-stakes conflicts, a specialised service beyond standard accounting.

What should I do if I receive a letter from HMRC opening an enquiry?

Do not ignore it or respond immediately without specialist advice. Contact our team promptly. We will work with you to understand the letter's scope and implications. We then collaborate to formulate a response strategy, often taking over all communication with HMRC to protect your position and ensure a measured, professional approach.

Can you help if I have undisclosed income from years ago?

Yes, absolutely. Our team specialises in voluntary disclosures and negotiating with HMRC to regularise historical tax affairs. We will work synergistically with you to assess the situation, determine the best disclosure route (such as the WDF or Let Property Campaign), and prepare a full disclosure to minimise penalties and interest.

What is your approach to working with clients and their other advisers?

Collaboration is at our core. We see ourselves as part of your advisory team, working synergistically with you and your existing accountants or lawyers. We ensure clear, coordinated communication and strategy, leveraging our specialist investigation expertise while they maintain their ongoing advisory role, providing a unified front.

ZenCall FAQ

How do I get started with ZenCall?

Getting started with ZenCall is straightforward. Simply visit the ZenCall website, create an account, and you can begin making calls right from your browser without needing any downloads or credit card information initially.

Are there any hidden fees with ZenCall?

No, ZenCall prides itself on transparent pricing. Users pay only for the minutes they use, with no hidden fees or recurring charges, allowing for straightforward budgeting and planning.

Can I make calls to any country?

Yes, ZenCall supports international calls to a wide range of countries. Users can easily find the country code and initiate calls to virtually any location worldwide, ensuring global connectivity.

What happens to my credits if I don’t use them?

ZenCall offers credits that never expire, which means you can use them at your convenience without the pressure of losing them. This flexibility allows users to manage their calling needs effectively over time.

Alternatives

Pure Tax Investigations Alternatives

Pure Tax Investigations is a specialist advisory firm in the business and finance category, dedicated to resolving complex HMRC enquiries. Clients may explore alternatives for various reasons, such as seeking different pricing structures, requiring a specific geographic presence, or desiring a different service model that aligns with their unique circumstances. When evaluating other options, it’s crucial to consider the depth of the team's direct HMRC experience and their collaborative approach. Look for a partner that offers clear, pragmatic guidance and a proven strategy for managing the full scope of an investigation, from initial enquiry to final resolution, ensuring your interests are robustly defended.

ZenCall Alternatives

ZenCall is a browser-based international calling service that enables users to make high-quality voice calls to mobile phones and landlines around the world without the need for apps or subscriptions. This service is particularly appealing to individuals, remote workers, and small teams seeking reliable and affordable global communication solutions. Users often seek alternatives to ZenCall due to factors like pricing, specific feature sets, or compatibility with different platforms that better suit their unique needs. When looking for an alternative to ZenCall, it is essential to consider several aspects, including call quality, pricing models, ease of use, and the availability of customer support. Evaluating user reviews and comparing features can also help in identifying a service that aligns with your communication requirements. Ultimately, the right alternative will provide a seamless experience tailored to your calling habits and budget.

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