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How big should your cash reserve be? a practical guide.

A cash reserve is the cheapest funding a business will ever have. This guide helps you size one and build it without starving growth.

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How big should your business cash reserve be?

Short answer: Many advisors suggest one to three months of fixed costs such as rent, payroll, insurance and loan payments, with more for seasonal businesses or those with lumpy revenue, a few large customers or long payment terms. Build it by setting aside a fixed share of revenue each week and directing windfalls to it.

Key facts

  • One to three months of fixed costs is a common target
  • Seasonal and lumpy businesses need more
  • Even 2% of weekly revenue builds a reserve
  • A reserve is the cheapest funding you have

Related: Practical Business Funding Guides for Canadian Owners · Business Funding Requirements in Canada · Documents Needed for Business Funding in Canada · Business Funding Affordability Calculator (CAD) · Funding Readiness Score Canada: Free 30-Second Check

Overview

A cash reserve is the cheapest funding a business will ever have. This guide helps you size one and build it without starving growth.

Start with fixed costs

Add up a month of fixed costs: rent, payroll, insurance, loan payments and essential subscriptions. Many advisors suggest a reserve of one to three months of these costs.

Seasonal businesses may need more to cover the off-season.

Adjust for risk

Businesses with lumpy revenue, a few large customers or long payment terms need larger reserves. Businesses with steady daily sales can run smaller ones.

Consider the cost of a single bad event: a broken machine, a lost client or a month of bad weather.

Build it gradually

Set aside a fixed percentage of revenue each week into a separate account. Even 2% builds meaningfully over a year.

Direct windfalls, such as a strong month or a tax refund, to the reserve.

Use it for the right things

The reserve covers genuine emergencies and short gaps. It is not for planned purchases, which should have their own plan.

Refill it after use.

Reserve vs funding

A business with no reserve often pays for short-term funding in emergencies. A business with a reserve can wait for cheaper money or avoid borrowing entirely.

Typical starting points

Monthly revenueTypically from around $20,000 a month in deposits for Canadian files. The exact line varies by funder and by file.
Time in businessTypically about 12 months. Newer businesses can be reviewed, but the options narrow.
Account healthLimited low-balance or negative days. Funders read the last few months of bank statements for this.
CreditScores from 500 are considered. A score of 600 or higher opens more options and better offers.
DocumentsA signed application and recent business bank statements, typically the last four months.
Existing advancesFiles with an existing advance can be reviewed, including second position.

Your checklist

  1. Total one month of fixed costs.
  2. Choose a target of one to three months.
  3. Open a separate reserve account.
  4. Set an automatic weekly transfer.
  5. Refill after any use.

Guides like this one are general education written for Canadian owners. They are most useful when you turn them into a few concrete actions with dates, and revisit them when your numbers change. If funding is part of your plan, the same preparation that makes the plan work, clear numbers and a specific purpose, also makes an application faster and stronger.

Talk it through

Merchant Fund Express reviews Canadian businesses in every province and territory. If you would like a specific answer for your business rather than general guidance, send a signed application and your last four months of business bank statements, or call (305) 384-8391 first to ask a question.

Sources and review

Reviewed by the Merchant Fund Express team on October 12, 2026. Official pages checked as of that date.

Common questions

Is this advice for my situation?

It is general education. Your file and agreements are specific, so read them and ask questions.

What should I do next?

Gather four months of statements and write what the money is for in one sentence.

Can you help me apply?

Yes. Apply once and the file is matched to the structure that fits.

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