Pure Tax Investigations vs ZenCall

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

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Pure Tax Investigations

Essential defense for complex HMRC tax investigations and disputes.

Last updated: March 1, 2026

Experience hassle-free international calls from your browser with ZenCall's 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

Specialist HMRC Investigation Defence

This is a fundamental feature providing an essential, independent layer between you and HMRC. The team, led by ex-HMRC inspectors, manages the entire process from the initial HMRC letter to final settlement. They handle all correspondence, data requests, and meetings, employing deep procedural knowledge to build a robust defence, challenge inaccuracies, and negotiate optimal outcomes, thereby shielding you from direct pressure and potential missteps.

Expertise in Serious Civil Investigations (COP9 & COP8)

Navigating a Code of Practice 9 (COP9) investigation for suspected fraud or a Code of Practice 8 (COP8) enquiry into complex avoidance is a critical necessity. Pure Tax Investigations has the specific, proven expertise to guide clients through these intensive procedures. This includes managing the Contractual Disclosure Facility (CDF) under COP9, ensuring correct legal procedures are followed, and formulating strategic disclosures to secure civil settlements over criminal prosecution.

Comprehensive Tax Disclosure Management

Proactively managing tax disclosures is a vital service to regularise your affairs and avoid investigations. The team expertly handles disclosures under key HMRC campaigns like the Worldwide Disclosure Facility (WDF) for offshore matters and the Let Property Campaign (LPC) for rental income, as well as disclosures for crypto assets, Indian mutual funds, and other complex income sources. This ensures disclosures are complete, accurate, and presented to minimise penalties.

Bespoke Advice for Private Clients & Businesses

Understanding that every client's situation is unique, this feature delivers tailored, pragmatic tax advice beyond just investigation defence. It covers complex private client areas like Residence & Domicile, Inheritance Tax planning, and property tax, as well as business-specific issues like R&D tax credit enquiries and corporate criminal offence (CCO) compliance. This holistic approach is necessary to structure affairs efficiently and meet long-term commercial and succession aspirations.

ZenCall

No Downloads Required

ZenCall operates entirely within your web browser, eliminating the need for any downloads or installations. Simply access the platform from your preferred browser, and you can start making calls immediately. This feature is essential for users who want to avoid the hassle of managing additional software and enjoy seamless communication.

Transparent, Per-Minute Pricing

One of ZenCall's standout features is its transparent pricing model. Users pay only for the minutes they use without any hidden fees. This straightforward billing approach is particularly beneficial for those who need to manage their budgets effectively and want to avoid unexpected charges associated with traditional calling services.

Unlimited US & Canada Calling Plans

For those who frequently call within North America, ZenCall offers unlimited calling plans starting at just $19 per month. This feature is a game-changer for businesses and individuals who need to maintain regular communication with clients, customers, or family members in the US and Canada without worrying about overage fees.

Flexible Credit System

ZenCall's credit system allows users to purchase calling credits that never expire. This flexibility means that you can buy credits as needed, ensuring that you have the ability to make calls at any time without feeling rushed to use them. This feature is particularly advantageous for occasional users who may not call regularly but need access to international calling when required.

Use Cases

Pure Tax Investigations

Responding to an HMRC Compliance Check or Enquiry

Receiving an HMRC enquiry letter is a pressing concern that demands immediate, expert attention. Pure Tax Investigations steps in to manage the entire process, from interpreting the scope of HMRC's questions and gathering the necessary information to formulating precise, strategic responses. This prevents clients from inadvertently providing misleading information and helps contain the enquiry, transforming a stressful situation into a professionally managed procedure.

Managing a Code of Practice 9 (COP9) Fraud Investigation

If HMRC suspects tax fraud and opens a COP9 investigation, the stakes are extremely high, with the risk of criminal prosecution. This use case is critical for securing a civil settlement. The specialists guide the client through accepting the CDF contract, conducting a meticulous disclosure of all deliberate conduct, and negotiating with the Fraud Investigation Service to achieve a financial settlement, thereby avoiding criminal charges.

Making a Voluntary Tax Disclosure

For individuals or businesses with undisclosed tax liabilities—from offshore income, rental profits, or crypto gains—making a voluntary disclosure is a necessary step to become compliant. Pure Tax Investigations identifies the correct disclosure facility (e.g., WDF, LPC), prepares a comprehensive disclosure report, calculates the tax, interest, and penalties, and liaises with HMRC to secure the best possible terms, often reducing penalty levels significantly.

Defending Against an HMRC Information Notice

When HMRC issues a formal Information Notice under its statutory powers, compliance is legally mandatory, but the scope can be contested. This use case involves expertly reviewing the notice for validity and proportionality, challenging it at tribunal if necessary, and managing the compliant production of information. This ensures clients do not face penalties for non-compliance while protecting them from overly broad and intrusive HMRC requests.

ZenCall

Remote Work Communication

ZenCall is an essential tool for remote workers who need to maintain clear communication with international clients and team members. With its high-quality voice calls and no download requirement, remote workers can connect efficiently without interruptions or technical issues.

Small Team Collaboration

For small teams operating across different countries, ZenCall provides an effective solution for collaboration. Teams can leverage the unlimited calling plans and flexible credit system to stay in touch with each other and with clients, ensuring that everyone is always connected.

Family Connections Abroad

Individuals looking to stay in touch with family members living overseas will find ZenCall invaluable. Its user-friendly platform allows for seamless calls at affordable rates, making it easy to maintain relationships regardless of distance.

Customer Support Services

Businesses can utilize ZenCall for customer support operations that require international calling. The transparent pricing model allows companies to budget effectively while providing excellent support to their global customer base, ensuring that help is just a call away.

Overview

About Pure Tax Investigations

Pure Tax Investigations is an essential, specialist defence service for businesses and entrepreneurs facing scrutiny from HM Revenue & Customs (HMRC). When you receive an HMRC letter, a compliance check, or a serious investigation notice, the immediate necessity is for expert, robust protection. This service acts as your critical, independent buffer, managing all communication and negotiation with HMRC on your behalf. Led by Amit Puri, a former senior HMRC tax inspector with over 20 years of direct experience, the team possesses the insider knowledge and pragmatic approach absolutely required to navigate high-stakes tax disputes. The core value proposition is certainty and peace of mind during inherently stressful and intrusive processes. Whether it's a routine enquiry, a complex Code of Practice 9 (COP9) fraud investigation, or a voluntary disclosure, Pure Tax Investigations provides tailored, commercial advice designed to protect your wealth, resolve the dispute efficiently, and safeguard your commercial aspirations. Their focus is not just on defence but on delivering clear, bespoke strategies that address your specific concerns, making them a non-negotiable partner for any serious tax matter.

About ZenCall

ZenCall is a revolutionary browser-based international calling platform designed to facilitate high-quality voice calls to both mobile phones and landlines across the globe. It eliminates the need for cumbersome apps, SIM cards, or long-term subscriptions, making it accessible and user-friendly right from your laptop or desktop. Whether you're a remote worker, a small team, or an individual seeking to connect with loved ones abroad, ZenCall provides a reliable and cost-effective solution for global communication. With transparent, per-minute pricing, you only pay for what you use, ensuring that there are no hidden fees or unexpected charges. Calls are initiated in seconds and are optimized for clarity and stability, so you can communicate without interruptions. ZenCall empowers users with instant access, clear call rates, and usage-based billing, making it the ideal choice for anyone requiring hassle-free international calling.

Frequently Asked Questions

Pure Tax Investigations FAQ

What is the first thing I should do if I receive an HMRC investigation letter?

The absolute first step is to seek specialist advice immediately and not to contact HMRC directly. Do not ignore the letter. Forward it to a tax investigation specialist like Pure Tax Investigations. They will assess the seriousness of the enquiry, explain your rights and obligations, and develop a strategic response plan. Early intervention is crucial to prevent miscommunication and manage the direction of the investigation from the outset.

How does your experience as former HMRC inspectors benefit clients?

This insider experience is a critical advantage. It provides deep, practical knowledge of HMRC's internal procedures, operational priorities, and the mindset of case officers. This allows the team to anticipate HMRC's next moves, communicate effectively using the correct terminology, and negotiate from a position of strength and understanding. It ensures your case is presented in the most compelling way HMRC expects and respects.

What is the difference between a compliance check and a COP9 investigation?

A compliance check is a routine HMRC review to check the accuracy of a tax return or claim; it is not an allegation of fraud. A Code of Practice 9 (COP9) investigation is a serious civil investigation into suspected tax fraud, where HMRC offers the opportunity to make a disclosure under the Contractual Disclosure Facility to avoid criminal prosecution. The latter is far more serious and requires immediate specialist representation.

Can you help if I need to make a disclosure for crypto taxes or offshore income?

Yes, managing complex disclosures is a core service. For crypto assets, offshore income (e.g., from Indian mutual funds), or undisposed rental profits, the team will identify the correct disclosure facility—such as the Worldwide Disclosure Facility (WDF)—and guide you through the entire process. This includes calculating historic liabilities, negotiating the appropriate penalty level, and preparing the full disclosure report to bring your affairs into compliance with HMRC.

ZenCall FAQ

How do I get started with ZenCall?

Getting started with ZenCall is simple. Just visit the ZenCall website, create an account, and you can begin making calls immediately. No credit card is required for initial sign-up.

Are there any hidden fees with ZenCall?

No, ZenCall prides itself on transparency. Users only pay for the minutes they use, with no hidden fees or additional charges. This straightforward pricing model makes budgeting for calls easy.

Can I use ZenCall on any device?

Yes, ZenCall is designed to be browser-based, meaning you can use it on any device with internet access and a web browser. There are no apps to download, making it incredibly convenient.

What if I run out of credits?

If you run out of credits while using ZenCall, you can easily purchase more credits at any time. Your credits never expire, allowing you to manage your calling needs flexibly and efficiently.

Alternatives

Pure Tax Investigations Alternatives

Pure Tax Investigations is a specialized service in the business and finance category, providing expert defense and tailored solutions for complex tax disputes and HMRC investigations. Clients often explore alternatives for various reasons, such as seeking different pricing structures, requiring a specific geographical presence, or needing a service with a different blend of advisory and hands-on support. When evaluating other providers, it is essential to prioritize firms with proven expertise in serious tax investigations, particularly those involving HMRC's Code of Practice 9. You must look for a team with direct, former HMRC experience and a track record of robust client representation. The necessity is a provider that offers comprehensive support, from disclosures to ongoing compliance, ensuring a complete defense.

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 globe without the need for apps or subscriptions. Its pay-as-you-go pricing model makes it accessible for individuals, remote workers, and small teams seeking affordable global communication solutions. However, users often seek alternatives due to various factors such as pricing flexibility, additional features, or specific platform requirements. When choosing an alternative, it is crucial to consider aspects such as ease of use, call quality, transparent billing, and the overall reliability of the service to ensure it meets your communication needs effectively.

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