Ms. shelly spring is a 48-year-old widow. while her deceased husband left her financially secure, she continues to work as a course assistant at a local college. her 2021 salary is $64,000, from which her employer withheld the following amounts:

RPP contribution - $2960

EI premium - $890

CPP contribution - $3166

Disability insurance premium - $205

Ms. spring pays one-half of the total disability insurance premium to the group plan, with her employer paying the balance. the plan provides periodic benefits that compensate for lost employment income. she started making payments in 2019 and made payments of $200 in that year, $250 in 2020, and $205 in 2021. during 2021, because of an extended illness, she received benefits of $5600.

In addition to her salary, her employer provides her with an allowance of $400 per month for maintaining an office in her home. This office is her principal work location. The office occupies 15% of her home and, for the year 2021, the costs of operating the home were as follows:

interest on mortgage -$4200

property taxes - $2750

electricity and water costs - $1340

maintenance and repairs -$1800

home insurance - $820

At the beginning of 2021, Ms. spring owns two residential rental properties, both acquired in 1996. On January 1, 2021, the UCC of property A was $156,000. The cost of this property was $245,000, including $40,000 for the land and $205,000 for the building. Property B had a cost of $426,000, including $100,000 for the land and $326,000 for the building. Its January 1, 2021, UCC was $276,000.

On June 1, 2021, property A was sold for $201,000, including $40,000 for the land and $161,000 for the building. On that same date, a new residential rental property was acquired at a cost of $322,000, including $75,000 for the land and $247,000 for the building. During 2021, Ms. spring received rents of $42,000 and had rental expenses, other than CCA, of $32,500.

Ms. spring owns shares of Canadian public companies that paid eligible dividends of $9,300 during 2021. She also owns shares in a foreign company that paid dividends of C$5,600. The government in the foreign country withheld income taxes of $840, giving Ms. spring a net receipt of $4,760

Required: Calculate Ms. spring's minimum 2021 net income, her minimum 2021 taxable income, and her 2021 minimum federal income tax payable without consideration of any income tax withheld by her employer. ignore GST/HST & PST considerations.