Federal Student Aid
Student loan repayment
Explore repayment with your actual loan information. Read the tool’s current guidance and confirm account-specific eligibility and terms with the responsible provider.
Calculators
Start with an estimate.
Official tools for common financial questions. Check the inputs, understand the limits, and keep the result in context.
From the original providers
Open loan calculator (opens in a new tab)
Internal Revenue Service
Federal tax withholding
Have current pay and relevant tax information ready. This estimator explores federal withholding; it does not account for every state or local tax.
Investor.gov
Compound interest
See how a starting amount, contributions, time and an assumed rate affect a mathematical illustration. The rate you enter is an assumption, not a forecast.
These tools are operated by public agencies. They are not Alooola products, and using them does not submit a calculation to our team. Check the provider’s current privacy and usage terms before entering personal information.
Keep the assumptions
with the answer.
- What went in?
- Record the date, balances, period, rate and other assumptions. Distinguish values from your records from estimates you entered.
- What is left out?
- Look for fees, taxes, inflation and changing circumstances. A tool may leave out something that matters to your decision.
- What changes the result?
- Change one assumption at a time. The answer shows sensitivity to that input; it does not establish what will happen.
Put the estimate in context.
Bring the decision you’re considering and the inputs behind the calculation.