Boutique Tax Compliance and Advisory · Toronto / GTA

Senior Tax Counsel
for Business Owners

Estate and succession planning, sale and purchase readiness, and ongoing tax planning.

The technical depth of a national firm, applied directly to the owner-managed businesses that rarely get access to it.

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15+
Years senior
tax experience
3+
Years as Partner at a
national mid-market firm
Mariya Honcharova, CPA, CA — Principal, MH Advisory

Mariya Honcharova, CPA, CAPrincipal and Founder

Core Practice

Three Areas. Deliberately Narrow.

The decisions that carry the greatest tax consequence for a business owner — and the least room for error.

01

Estate, Succession & Family Office

Estate freezes, pipeline transactions, and post-mortem planning. Discretionary and alter ego trusts. Corporate reorganizations under ss. 55, 85, 86, 88, 97 and 98.

Where technical structure and family reality have to work together.

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02

Sale & Purchase Readiness

Pre-sale planning, purification, LCGE and QSBC qualification, and buy-side and sell-side diligence — including the business and non-tax considerations that shape a transaction.

The work that has to happen before a process starts, not after.

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03

Tax Planning for Business Owners

Owner compensation strategy, holding company structuring, and the CCPC rules that quietly determine outcomes — SBD grind, RDTOH, CDA and GRIP.

Ongoing planning for owners who want an advisor, not a preparer.

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Also available, alongside the core practice

Compliance & CRA Controversy

T2, T1, trust and partnership compliance. CRA audit defence, objections, voluntary disclosures, and fairness requests. Offered primarily as continuing support to advisory clients.

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VP Tax & Interim CFO Engagements

Contract senior tax and finance leadership for family offices and corporations that need experienced oversight without a permanent hire. Engaged selectively.

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Why This Practice Exists

The Underserviced Middle of Canadian Tax

Many owner-managed businesses sit in an awkward position in the professional services market. The work they need isn't the same as what a company ten times the size requires — but passing a business to the next generation, restructuring ownership, or preparing a company for sale demands the same depth of expertise to get right, whatever the size of the business behind it. The fee structures that sustain that expertise, however, are built around much larger clients.

The result is predictable. Owners either pay national-firm rates for a service model designed around a different kind of client, or they work with advisors who are perfectly capable on the annual filings but reach for the phone when a genuinely complex planning question comes up.

Neither is a good outcome for a business that represents most of an owner's net worth.

We bridge this gap: sophisticated, high-tier technical tax capability, delivered directly by a former national-firm partner, at a scale and fee structure built for an owner-managed business.

What's Different

Large-Firm Depth. Direct Access.

Large firms have the expertise — but not always the access. Smaller firms have the access — but not always the depth. This practice is built around a different model: senior technical expertise, delivered directly, by the person you hired.

About Mariya
  • 01

    You work with the partner — always

    No handoffs after the first meeting. Your file is handled by a former partner at a national mid-market firm with Big 4 roots, not delegated down and reviewed at the end.

  • 02

    Genuine reorganization and estate depth

    CICA In-Depth Tax Parts I and II, plus the In-Depth Corporate Reorganizations program. Freezes, trusts, and step plans under ss. 55, 85, 86, 88, 97 and 98 are core work, not a referral out.

  • 03

    Sale readiness, not just deal execution

    Most owners engage tax advice too late to change the outcome. The highest-value work happens in the years before a sale — purification, structuring, and resolving what diligence will inevitably find.

  • 04

    Built for the businesses that get overlooked

    National-firm technique, delivered at a scale that works for an owner-managed business rather than one priced for a client ten times the size.

Who We Serve

Owners, Families, and the Advisors Around Them

Trusted by owners, CFOs, legal counsel, and family advisors — often at moments where tax, family, and business decisions are inseparable.

Owner-Managed Businesses

Private companies where the owner is the decision-maker — navigating succession, a coming sale, or the structuring that should precede both.

Owners Preparing for a Sale

Businesses where an exit is on the horizon, whether that's next year or in five — and where the structuring window is still open.

Family Offices & Principals

Families managing multi-generational wealth, trust structures, and estate transitions where discretion matters as much as technical accuracy.

Legal Counsel & Advisors

Lawyers, estate advisors, and wealth professionals coordinating multi-party planning who need a senior tax voice at the table.

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Ready to work with a senior advisor?

Let's talk about your situation — no obligation, and no junior staff screening the call.

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