Tax Free Savings Account Interest Calculator

A Tax-Free Savings Account (TFSA) is a tax-advantaged investment account in Canada that allows you to grow your money without paying taxes on the interest or capital gains earned. This calculator helps you estimate how much you'll earn in interest over time with your TFSA contributions.

How to Use This Calculator

To calculate your potential TFSA interest earnings:

Enter your initial deposit amount in the "Initial Deposit" field.
Enter your monthly contribution amount in the "Monthly Contribution" field.
Select the number of years you plan to invest in the "Investment Period" dropdown.
Enter the annual interest rate you expect to earn in the "Annual Interest Rate" field.
Click the "Calculate" button to see your results.

The calculator will display your total balance at the end of the investment period, the total interest earned, and a growth chart showing your account balance over time.

Formula Explained

The calculation for a TFSA uses the compound interest formula:

Compound Interest Formula

A = P(1 + r/n)^(nt)

Where:

A = the future value of the investment/loan, including interest
P = the principal investment amount (the initial deposit or loan amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per year
t = the time the money is invested or borrowed for, in years

For this calculator, we assume monthly compounding (n=12) and monthly contributions. The total balance is calculated by applying the compound interest formula to each month's contribution.

Worked Examples

Example 1: Basic TFSA Calculation

Suppose you deposit $5,000 initially and contribute $200 per month to your TFSA. You expect an annual interest rate of 5%. How much will you have after 10 years?

Using the calculator:

Initial Deposit: $5,000
Monthly Contribution: $200
Investment Period: 10 years
Annual Interest Rate: 5%

The calculator will show you that your account balance will be approximately $22,345, with $12,345 in interest earned.

Example 2: Long-Term Investment

If you invest $10,000 initially and contribute $500 per month with a 6% annual interest rate, how much will you have after 20 years?

Using the calculator:

Initial Deposit: $10,000
Monthly Contribution: $500
Investment Period: 20 years
Annual Interest Rate: 6%

The calculator will show you that your account balance will be approximately $120,450, with $70,450 in interest earned.

Comparison Table

Here's a comparison of different TFSA scenarios:

Scenario	Initial Deposit	Monthly Contribution	Interest Rate	Years	Final Balance
Conservative	$3,000	$100	4%	10	$13,200
Moderate	$5,000	$200	5%	10	$22,345
Agressive	$10,000	$500	6%	10	$72,500

Frequently Asked Questions

What is a Tax-Free Savings Account (TFSA)?: A TFSA is a tax-advantaged investment account in Canada that allows you to grow your money without paying taxes on the interest or capital gains earned.
How much can I contribute to a TFSA in a year?: The annual contribution limit for a TFSA is currently $6,500 per year. This limit is indexed to inflation and may change in future years.
Can I withdraw money from my TFSA without paying taxes?: Yes, you can withdraw money from your TFSA at any time without paying taxes on the amount withdrawn. However, any earnings on the withdrawn amount will be taxable.
What happens to my TFSA if I stop contributing?: Your TFSA will continue to earn interest even if you stop contributing. The money will remain in the account until you withdraw it.
Are there any penalties for withdrawing money from my TFSA?: No, there are no penalties for withdrawing money from your TFSA. However, any earnings on the withdrawn amount will be taxable.