Every piece of personal-finance writing tells you to hold three to six months of expenses. The number is fine. The reasoning behind it does not survive contact with a work permit.
Standard advice assumes the worst case is unemployment: income stops, expenses continue, you look for work. For someone on temporary status, unemployment can trigger something categorically worse — loss of status, and with it the right to stay.
What you are actually insuring against
Not just lost income. Three specific risks the usual advice never names:
Job loss on a closed permit. A closed work permit ties you to one employer. Lose the job and you are not simply unemployed — your authorisation to work is gone, and you are on a clock to find another sponsor or change status.
Immigration costs arriving with no warning. A new employer, a new permit application, a status restoration, an hour with a lawyer. These land precisely when income has stopped.
Having to leave. The scenario nobody budgets for. Flights for a family, breaking a lease, shipping or abandoning your belongings, and arriving back with no income at either end.
The standard emergency fund answers "how do I pay rent until I find work." Yours has to answer "how do I fix my status, or leave with dignity, while paying rent."
A target that reflects that
Build in this order. Each stage is useful on its own, which matters — an unreachable target gets abandoned.
Stage one — one month of Canadian costs. Rent, food, transit, phone. Achievable within a few pay cycles for most people, even while sending money home. This covers a late paycheque or a short gap.
Stage two — three months, plus one-way flights home for everyone with you. The flights are the part standard advice omits entirely, and for a family they are not a small number. Price them once, honestly, and include them.
Stage three — six months, plus flights, plus a professional-fees reserve. Enough to fight for your status rather than being forced into whatever is fastest.
Where to keep it
In Canadian dollars, in Canada, somewhere you can reach within a day.
The currency point is not a small one. Money held at home in another currency does two unhelpful things at once: it exposes your emergency fund to exchange-rate moves, and it costs you a transfer margin at the exact moment you need the money urgently — which is when you will accept whatever rate you are offered.
A plain high-interest savings account is right for this. Not investments, which can be down exactly when you need them. Not a TFSA holding stocks, for the same reason. The job of this money is to be boring and instantly available.
The unavoidable tension
For anyone supporting family, every dollar held here is a dollar not sent. That is real and this article will not pretend otherwise — there is a fuller treatment in how much to send home.
The single argument worth holding onto: a status collapse usually ends the remittances entirely, for years. A month of expenses held here is not withheld from anyone. It is what protects the sending.