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FAQ: Which Debts Incur Compound Interest?

Q1. Do credit cards incur compound interest?

Yes.

Rhetorical algebra:
Each day takes yesterday's balance, adds yesterday's interest, and uses that new amount as today's balance. Today's interest is then based on that larger amount.

Example:
Start with 1000 dollars.
Day one adds 2 dollars, making 1002.
Day two adds interest on 1002, making about 1004.
Day three adds interest on 1004, and so on.

Q2. Do personal loans incur compound interest?

Yes.

Rhetorical algebra:
Each period takes the previous balance, adds the interest that accumulated, and uses that new balance to compute future interest.

Example:
Start with 5000 dollars.
One month adds 50 dollars, making 5050.
Next month adds interest on 5050, making about 5100.

Q3. Do student loans incur compound interest?

Yes.

Rhetorical algebra:
Interest accumulates daily. When capitalization occurs, all accumulated interest is added to the principal. Future interest is based on the larger principal.

Example:
Start with 20000 dollars.
A year adds 1200 dollars of interest.
Capitalization makes the new principal 21200.
Future interest is based on 21200.

Q4. Do auto loans incur compound interest?

Often yes.

Rhetorical algebra:
Interest accumulates daily. If payments are late, accumulated interest is added to the balance, and future interest is based on the increased balance.

Example:
Start with 15000 dollars.
Daily interest adds 75 dollars in a month.
If payment is late, the balance becomes 15075.
Next month's interest is based on 15075.

Q5. Do mortgages incur compound interest?

Yes.

Rhetorical algebra:
Each month calculates interest on the remaining principal. After payment, the principal shrinks slightly. Next month's interest is based on whatever principal remains.

Example:
Start with 300000 dollars.
Month one adds 1000 dollars.
Payment reduces principal to 299000.
Month two adds interest on 299000.

Q6. Do HELOCs incur compound interest?

Yes.

Rhetorical algebra:
Interest is computed daily on the current balance. If only interest is paid, the principal stays the same, so interest keeps building on the same or larger balance.

Example:
Start with 40000 dollars.
Daily interest adds about 6 dollars per day.
Borrowing another 5000 raises the balance to 45000.
Future interest is based on 45000.

Q7. Do payday loans incur compound interest?

Yes, aggressively.

Rhetorical algebra:
Fees act like interest. When the loan rolls over, the fee is added to the balance. The next fee is based on the new, larger balance.

Example:
Start with 300 dollars.
Fee adds 45 dollars, making 345.
Next period adds another 45, making 390.
Next period adds another 45, making 435.

Q8. Does IRS tax debt incur compound interest?

Yes.

Rhetorical algebra:
Interest is computed daily on the current amount owed. Penalties increase the balance, and future interest is based on the increased balance.

Example:
Start with 10000 dollars.
Daily interest adds about 3 dollars per day.
Penalty adds 500 dollars, making 10500.
Future interest is based on 10500.

Q9. Does medical debt incur compound interest?

Only after collections.

Rhetorical algebra:
Once in collections, interest is added to the balance. Future interest is based on the increased balance. Fees may also increase the base for future interest.

Example:
Start with 2000 dollars.
Interest adds 40 dollars, making 2040.
Next month adds interest on 2040, making about 2080.
Fee adds 50 dollars, making 2130.
Future interest is based on 2130.

Q10. Do business loans incur compound interest?

Yes.

Rhetorical algebra:
Interest is computed daily on the current balance. If the balance increases due to new borrowing or fees, future interest is based on the larger balance.

Example:
Start with 10000 dollars.
Daily interest adds 5 dollars per day.
Borrowing 2000 more raises the balance to 12000.
Future interest is based on 12000.

Summary

Compound interest always follows the same verbal pattern:

Take the previous balance.
Add the interest that accumulated.
Use the new balance to compute future interest.
Repeat.

References