Professional corporations · CCPC · Canadian balance sheets

Bitcoin on Your Professional Corporation Balance Sheet

A practical guide for Canadian doctors, lawyers, and dentists. RDTOH mechanics, Capital Dividend Account, SBD threshold management, T1135, and what to tell your accountant.

Last updated April 2026 · Educational only. Not tax advice. Confirm current rates and rules with a qualified Canadian accountant.

• 01 Why professional corporations fit Bitcoin Section
• 02 The CCPC advantage: RDTOH + CDA Section
• 03 Passive income and the SBD threshold Section
• 04 T1135 and foreign property Section
• 05 Platforms: Bitbuy vs Wealthsimple Section
• 06 Case study: dentist with $500K retained earnings Section
• 07 What to tell your accountant Section
• 08 The bottom line Section

If you are a Canadian doctor, dentist, or lawyer with a professional corporation, you almost certainly have a problem most people would envy: too much cash sitting in the corp, earning almost nothing.

Active practice income is taxed at the small business rate. Retained earnings pile up. Many professionals already hold bonds, GICs, or mutual funds inside the corporate account. Inflation erodes purchasing power. Bond yields remain modest.

Allocating a small percentage of retained corporate earnings to Bitcoin is one way Canadian professionals are addressing idle cash. This guide covers the tax mechanics, the risks, the compliance requirements, and the conversation to have with your accountant before any purchase.

Why professional corporations are suited to Bitcoin

Professional corporations are structurally different from personal taxable accounts in ways that matter for a long-term reserve asset.

• High retained earnings, low operating overhead. A dentist grossing $600K per year may retain $200-350K annually after salaries and expenses. That capital sits idle. A 2-5% allocation gives that capital exposure to a non-correlated asset with fixed supply.
• Refundable tax on passive income. When the corporation realizes passive investment income (including Bitcoin capital gains), it pays tax at roughly 50% upfront. A large portion of that tax is refundable when taxable dividends are later paid. This is the RDTOH mechanism.
• Capital Dividend Account. The non-taxable portion of capital gains flows into the CDA and can be distributed to shareholders tax-free.
• Longer time horizon. Professional practices often have multi-decade lives. Bitcoin is held as a multi-year treasury allocation, not a trading book.

Professional corporations are generally excluded from the Canadian Entrepreneurs’ Incentive reduced inclusion rate for certain CCPC founders. Standard RDTOH and CDA rules still apply in full.

The CCPC advantage: RDTOH + Capital Dividend Account

Two accounts matter more than most professionals realize.

Refundable Dividend Tax on Hand (RDTOH)

When a CCPC earns passive investment income, Part IV or Part I tax applies at a high rate. A portion of that tax is tracked in the RDTOH account. When the corporation later pays taxable dividends to the shareholder, it receives a dividend refund that effectively recovers much of the corporate-level tax.

Net result: the combined corporate-plus-personal tax on distributed passive income is designed to approximate what the individual would have paid if the investment had been held personally.

Capital Dividend Account (CDA)

The non-taxable half (or other non-taxable portion under current inclusion rules) of a capital gain is added to the CDA. The corporation can elect to pay a capital dividend out of the CDA. That distribution is received tax-free by the Canadian-resident shareholder.

Bitcoin held as capital property produces capital gains on disposition. The non-taxable portion therefore builds CDA capacity. This is one of the structural reasons a professional corporation can be an efficient long-term holder.

Unrealized gains do not create RDTOH or CDA entries. Only realized dispositions matter for these accounts.

Passive investment income and the SBD threshold

This is the risk accountants correctly flag.

A CCPC qualifies for the Small Business Deduction on the first $500,000 of active business income (federal rate currently 9% on that band). The SBD limit is reduced when the corporation (and associated corporations) earns too much Adjusted Aggregate Investment Income (AAII).

Threshold: $50,000 of AAII.

• $5 of SBD limit is lost for every $1 of AAII above $50,000.
• SBD is fully eliminated at $150,000 of AAII.

Example. The corporation earns $80,000 of AAII (interest plus two-thirds of realized Bitcoin gains). That is $30,000 above the threshold. SBD limit falls by $150,000. Only $350,000 of active income receives the small-business rate. Additional tax on the excess active income is roughly $9,000-$15,000 depending on province.

What counts as AAII includes interest, certain rental income, foreign dividends, and two-thirds of realized capital gains. Unrealized Bitcoin gains do not count. The grind applies only when you sell.

Position sizing implication. A 3% allocation on $500,000 retained earnings is a $15,000 cost base. A large multiple on that position can produce enough realized gain in one year to push AAII over the threshold if other passive income already exists.

Practical responses: spread dispositions across fiscal years, coordinate sales with lower-AAII years, hold for the long term so gains remain unrealized, and review idle cash that would otherwise generate interest.

Bitcoin inside a CCPC is not automatically a tax trap. Position size and realization timing matter, as they do for any corporate passive investment.

T1135 obligations

If the corporation holds specified foreign property with an aggregate cost base exceeding $100,000 CAD at any time during the year, Form T1135 must be filed.

Bitcoin held on a foreign exchange can be specified foreign property. Cost base, not market value, is the test. Detailed reporting applies once cost exceeds $250,000 in some circumstances.

The practical solution used by many professionals: open the corporate Bitcoin account on a Canadian-registered platform. Bitbuy and Wealthsimple both support corporate accounts and are Canadian platforms. T1135 risk for the Bitcoin position itself is thereby reduced or eliminated.

If Bitcoin is already held on a foreign platform, document cost base carefully and file T1135 when required. T1135 is an information return. It does not create extra tax by itself, but the penalty for failure to file is material.

Platforms: Bitbuy Corporate vs Wealthsimple

Both platforms support corporate accounts. Choice depends on size and workflow.

For an initial allocation in the $10,000-$50,000 range, Wealthsimple Business is often the lowest-friction path if the professional already uses the platform. Above that, or when dedicated corporate support is wanted, Bitbuy’s corporate desk is commonly used by medical and dental corporations.

Open the account in the corporation’s legal name and link corporate banking. Do not buy in a personal account and transfer into the corp. That creates ACB and potential shareholder-benefit problems.

Case study: dentist with $500K retained earnings

Setup. Dr. Sarah Chen, dentist, Ontario CCPC. $500,000 retained earnings currently in GICs at roughly 4%. Annual active business income $400,000 (inside SBD limit). Existing AAII from GIC interest about $20,000 per year.

Decision. Allocate 3% of retained earnings to Bitcoin = $15,000.

Immediate effects:

• Idle cash reduced by $15,000. Interest income falls slightly.
• No tax on the purchase. No realization event.
• Unrealized gains do not affect AAII or SBD.

If the position later grows substantially and is sold in a single year, the realized capital gain will contribute two-thirds of that gain to AAII. Planning the year of disposition becomes part of the annual conversation with the accountant.

Many professionals start with 1-3% of surplus cash that is not needed for near-term practice operations or personal distributions. The exact percentage is a board (or sole shareholder) decision, not a product recommendation.

What to tell your accountant before year-end

1. Bitcoin (or a Canadian Bitcoin ETF) will appear on the corporate balance sheet.
2. Provide the full transaction history and CAD cost base from day one.
3. Confirm the platform is Canadian so T1135 treatment is clear.
4. Flag any planned dispositions so AAII and SBD impact can be modelled before fiscal year-end.
5. Ask for CDA and RDTOH tracking to be kept current once gains are realized.
6. Confirm the investment policy or director resolution that authorizes the allocation.

Bring the conversation early. Year-end surprises are expensive. Clean records from the first purchase make the accountant’s job straightforward.

The bottom line

Professional corporations in Canada often hold large pools of retained earnings in low-yield instruments. A small, documented allocation to Bitcoin can sit inside the existing CCPC tax framework (RDTOH, CDA, capital gains treatment) provided position size and realization timing respect the SBD passive-income rules and T1135 thresholds are handled correctly.

This is balance-sheet work, not a trading strategy. Structure first. Allocate second. Report accurately. Review with the accountant every year.