The Finance Algorithm
TFA

Loan Top-Up Calculator

Calculator

Compare topping up your existing loan vs getting a new one for additional funds

Free to useNo data storedAI insightsUpdated: February 2026

Need more money but already have a personal loan? You have two options: top up your existing loan or get a new one. This calculator compares both approaches to help you find the cheaper and simpler option.

Enter Your Details

Enter Your Details

$

Amount remaining on your current loan

%

Interest rate on your current loan

How many months left on current loan

$

How much more do you need to borrow?

%

Rate on a completely new loan

$

Fee charged by your current lender for top-up

$

Fees for setting up a new loan

How long for the new or topped-up loan

Real-World Examples

Small Top-Up

Lisa has $8,000 left at 12% (18 months). Needs $3,000 more. Top-up rate: 12%, new loan rate: 10%.

Inputs Used:

existing:8,000additional:3,000currentRate:12newRate:10

New loan saves $180 over the term despite $200 establishment fee. Worth switching if she values the lower rate.

Larger Additional Amount

Mike has $15,000 left at 11% (30 months). Needs $15,000 more. Top-up fee: $100. New loan fee: $250.

Inputs Used:

existing:15,000additional:15,000currentRate:11newRate:9

New loan at 9% saves $1,200+ despite fees. The rate difference over $30,000 is significant.

Frequently Asked Questions

Glossary

Loan Top-Up
Adding to your existing loan balance with the same lender, usually at the same or similar rate.
Refinance
Paying off your existing loan with a new loan, often from a different lender with better terms.
Break Cost
Fee charged for paying off a loan early - important to factor in when considering a new loan.

How to Use

  1. 1Enter your existing loan balance and rate
  2. 2Add months remaining on your current loan
  3. 3Specify how much additional funds you need
  4. 4Compare rates and fees for top-up vs new loan
  5. 5See which option saves you money

Key Information

  • Top-ups are simpler but may restart your loan term
  • New loans may have better rates if the market has dropped
  • Consider fees: top-up fees vs new loan establishment costs
  • Your credit score may have improved since your original loan

Pro Tips

  • Check if your current lender offers a rate match or discount for loyalty
  • A new loan from a different lender resets early exit fees you might have
  • If market rates have dropped, a new loan might save more despite fees
  • Consider consolidating other debts at the same time if topping up

Avoid These Mistakes

  • Automatically topping up without checking if new rates are better
  • Ignoring fees when comparing - they can change the calculation
  • Extending the term without calculating total interest impact
  • Not checking if your current loan has early repayment penalties

Disclaimer: This calculator provides estimates only and should not be relied upon for financial decisions. Interest rates, fees, and policies change frequently. Always verify information with lenders directly. This is general information, not personal financial advice. Consider seeking advice from a licensed mortgage broker or financial advisor.

Last updated: February 2026

Ask AI anything