OpenVisaCan I sponsor my spouse if I'm a student or my income is low?
What you sign is a promise to support, not an income test.
For a spouse or partner there is no income requirement. What IRCC checks is a short list of disqualifiers, and being a student isn't on it.
1. Is there an income requirement?
Not for a spouse, common-law partner or conjugal partner. The only time income comes into it is when the person you sponsor has a dependent child who has children of their own, or when you sponsor other relatives.
In most cases, there isn't an income requirement to sponsor your spouse, partner or dependent child.
2. What does disqualify a sponsor?
The same page lists them. The one students ask about is social assistance.
You may not be eligible to sponsor your spouse or partner if you … are receiving social assistance for a reason other than a disability.
Student loans, scholarships, Employment Insurance and a part-time job are not social assistance. Provincial welfare programs are. The other items on the list: being under 18, being in prison, being under a removal order, an undischarged bankruptcy, certain criminal convictions, defaulting on a previous undertaking, an immigration loan or court-ordered support, an undertaking for a previous spouse that started less than 3 years ago, an application already pending for the same spouse, and having been sponsored as a spouse yourself less than 5 years ago.
3. What am I actually signing?
An undertaking: a promise to provide for your spouse's basic needs so they don't need social assistance. For a spouse or partner it lasts 3 years from the day they become a permanent resident, and it stays in force even if the relationship ends.
… signed an undertaking for a previous spouse or partner that you sponsored and it hasn't been 3 years since they became a permanent resident. This means you're still financially responsible for them.
4. On the form
IMM 1344 asks yes/no eligibility questions, such as whether you receive social assistance or have defaulted on a previous undertaking. There is no income threshold for a spouse. The document checklist (item 5 of the sponsor's supporting documents, Employment/Source of Income) still asks for proof of your employment and income. If you aren't working, it asks for a written explanation of how you'll support yourself and your spouse. Quebec residents skip that item; Quebec adds its own undertaking and, in some cases, its own income test (the Quebec page).
OpenVisa is software, not a lawyer or RCIC. This page explains what the rules and forms say; it is not advice about your case. You submit your application yourself.