Should you leave money in your corporation, or pay it out?

The core trade-off

Every dollar your corporation earns eventually faces up to two layers of tax: corporate tax when the corporation earns it, and personal tax when you withdraw it as salary or dividends. Canada's tax system is designed so that, over time, the combined result is roughly similar whether income flows through a corporation or is earned personally — a principle called integration. What you control is timing: leave the money in the corporation and only the first layer applies until you decide to take it out.

The tax-deferral advantage of retained earnings

Because active business income is taxed at the reduced small business rate inside the corporation, retaining earnings means more after-tax dollars are available to reinvest, right now, than if you'd paid the money out and then paid personal tax on top. That deferral is genuinely useful when:

• You're reinvesting in equipment, inventory, staff, or growth and don't need the cash personally
• You're building a cash cushion inside the business for slow seasons or upcoming projects
• Your personal income is already sufficient from salary or other sources, and pulling out more would just push you into a higher personal tax bracket for no reason

The deferral advantage is largest for income taxed at the small business rate. Once you understand how much of your income actually qualifies for that rate, see our companion article on the Small Business Deduction and the $50,000 passive income rule — it directly affects how much retaining earnings is worth.

When paying it out makes more sense

Deferral isn't automatically the right move. Reasons to pay yourself now instead of retaining include:

• You need the income personally — for living expenses, a major purchase, or paying down personal debt.
• You want RRSP contribution room — salary counts as earned income and builds RRSP room (generally 18% of earned income, up to the annual CRA maximum); dividends do not.
• You want CPP contributions — salary generates Canada Pension Plan contributions and future CPP benefits; dividends don't.
• You want to fund a TFSA or personal investments — money has to leave the corporation before it can go into your own registered accounts.
• Income splitting with family — where appropriate and compliant with the rules around dividends to family members.

For most owner-managers, the salary-versus-dividends decision and the retain-versus-pay-out decision are really the same conversation. Our salary vs. dividends calculator is a good starting point once you know how much you plan to withdraw.

The passive-income trap

Here's where retaining earnings can quietly backfire: if the cash you leave in the corporation isn't reinvested in the business but instead sits as investments — a portfolio of stocks, bonds, or GICs held inside the corporation — the investment income that portfolio generates is treated very differently than active business income. Corporate investment income is taxed at high rates, and once your corporation's passive investment income exceeds $50,000 in a year, it starts reducing the amount of active business income eligible for the small business rate the following year. Push passive income far enough and you can lose the reduced rate on active income entirely. We cover the mechanics and the numbers in detail in our article on the $50,000 passive income rule.

This doesn't mean you should never invest through a corporation — it means the decision to retain earnings and the decision to invest them inside the corporation should be evaluated separately, with the passive-income thresholds in mind.

Corporate vs. personal investing, at a high level

Investment income earned personally can benefit from preferential treatment in registered accounts like a TFSA or RRSP, and from the lower personal capital gains and dividend tax rates outside those accounts. Investment income earned inside a corporation is taxed at a high rate up front, with a portion tracked in a refundable tax account that's returned to the corporation only when it pays out taxable dividends to you. In practice, this means corporate investing is rarely a straightforward substitute for personal registered-account investing — it's a different tool, useful in different circumstances, and the comparison depends heavily on your personal tax bracket, time horizon, and how the funds will eventually be used.

RRSP and TFSA room considerations

If you're retaining most of your income in the corporation and paying yourself little or no salary, check what that's doing to your registered savings room. RRSP room only grows with earned income (salary, not dividends), so a dividends-only compensation strategy can leave you with little or no new RRSP room each year. TFSA contribution room, by contrast, accrues to every eligible Canadian resident regardless of income source, so it isn't affected the same way — but you still need to withdraw funds from the corporation before you can contribute them to a TFSA.

It's genuinely situational

There's no universal rule for how much to retain versus pay out. A contractor building up a down payment for a second property, a business owner reinvesting heavily in growth, and an owner nearing retirement and drawing down corporate savings all have very different answers to this question — and the right mix often changes from year to year. This is exactly the kind of decision worth revisiting annually with your accountant, ideally alongside your advisory or fractional CFO planning, rather than defaulting to whatever was done last year.

This article is general information, not tax advice — confirm your specific situation with EverStone CPA.

About the author

Sunny Dhillon, CPA

Founder of EverStone CPA, a family-owned Abbotsford firm, and a member of the Chartered Professional Accountants of British Columbia (CPABC). Sunny works with incorporated contractors and small business owners across Canada on tax, bookkeeping and advisory. More about Sunny →