Savings should be taken from discretionary income, which is what remains after necessary expenses, and fixed expenses are regular bills like rent.
Savings should come from the discretionary income part of your gross income, which is the income you have left after deducting taxes and necessary expenses. Fixed expenses are the bills you have to pay regularly, like rent or mortgage payments. Discretionary income is what remains after deducting taxes and essential expenses, representing the amount available for saving, investing, or extra spending.
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