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It will be a non refundable credit if you quaslify.
https://www.softrontax.com/blog/TheBasicPersonalAmountandtheSpousalAmount
The Spouse or Common-Law Partner Amount (line 30300) is a non-refundable tax credit that you can claim if, at any time during the year,
you supported your spouse or common-law partner,
and their net income from line 23600 of their tax return (or the amount it would be if they filed a return) was less than your basic personal amount. The spousal amount moves in tandem with the basic personal amount. For the 2024 tax year the spousal amount is set at $15,705. If your spouse or partner was also
dependent on you due to an impairment in physical or mental functions,
you can claim an additional amount. Only one spouse or common-law partner can claim this amount for each other in the same tax year.
The credit is calculated by subtracting your partner’s net income from $15,000 and multiplying the remainder by 15%. The maximum credit is $2,250 ($15,000 x 15%).
The corresponding provincial or territorial non-refundable tax credit on line 58120 of your provincial or territorial Form 428.
https://turbotax.intuit.ca/tips/a-guide-to-claiming-a-non-resident-spouse-and-dependants-on-your-taxes-16057#:~:text=A%20dependant%20is%20someone%20who,are%20mentally%20or%20physically%20disabled.
What are the rules for claiming a dependant?
A dependant is someone who relies on you to provide them with their basic fundamental needs. This includes shelter, food, and clothing. You can claim a spouse as a dependant if they earn little to no income or are mentally or physically disabled.
Family relationships are intricate, of course; therefore, a dependant may be a child, grandchild, stepchild, niece, nephew, brother, sister, etc. These family members may be yours directly, or those of your spouse.
When to claim a spousal amount: 5 examples
To get a better understanding of claiming spousal credits—whether or not your spouse is a Canadian resident—here are some scenarios that could apply to you:
Sole breadwinner in Canada. You work full time and provide housing, clothing, food, and other life necessities for your husband. He had zero income for the tax year. Your personal tax credit is $2,200. Since $2,200 minus zero is $2,200, your spousal amount tax credit is $2,200.