Master Loans & Credit Before Real Stakes Are on the Line
Practice taking out mortgages, auto loans, HELOCs, personal loans, and student debt. Watch real amortization schedules tick down, see how debt-to-income affects your credit score, and learn which payoff strategies actually work.
Five loan types with realistic terms
Every loan in CapitalLab uses real interest rates, amortization schedules, and payment structures. Understand the true cost of borrowing before you sign on any dotted line.
Mortgage
The largest loan most people will ever take. Practice understanding how 30 years of payments break down between principal and interest — and how much you actually pay over the life of the loan.
- Fixed monthly payments with real amortization
- Property tax and insurance included in payment
- Early payments are almost entirely interest
- Extra principal payments can save tens of thousands
Auto Loan
Cars depreciate the moment you drive them off the lot. Practice seeing how a $30,000 auto loan affects your monthly cash flow and net worth over time.
- Fully amortizing over 3–7 year terms
- Asset depreciates while you pay interest
- Higher rates for longer loan terms
- Impacts debt-to-income ratio significantly
HELOC
A home equity line of credit lets you borrow against your property's equity. Powerful for real estate investors — dangerous if mismanaged.
- Variable rate adjusts with market conditions
- Draw period followed by repayment period
- Only pay interest on amount drawn
- Risk of losing your home if you default
Personal Loan
Unsecured loans with higher interest rates. Useful for consolidating debt or covering emergencies, but expensive if you carry them long-term.
- No collateral required
- Higher rates due to unsecured nature
- Fixed monthly payments
- Can be used for any purpose
Student Loan
The debt that follows millions of Americans for decades. Practice managing student loan payments alongside other financial goals and see how payoff timing matters.
- Long repayment periods stretch total cost
- Income-driven repayment options available
- Deferment periods accrue interest
- Refinancing can lower your rate significantly
See where every payment actually goes
Most people don't realize that in the first years of a 30-year mortgage, over 80% of each payment goes to interest. CapitalLab shows you the full amortization schedule so you understand the true cost of every loan.
Monthly Breakdown
See exactly how much of each payment goes to principal vs. interest. Watch the ratio shift as you pay down the loan over time.
Total Interest Paid
A $300,000 mortgage at 7% costs over $418,000 in interest alone over 30 years. See the full cost before you commit.
Extra Payment Impact
Adding $200/month to a $300k mortgage saves over $100,000 in interest and pays it off 7 years early. Test it yourself.
Remaining Balance
Track your outstanding balance month by month. Understand how slowly equity builds in the early years — and how it accelerates later.
Principal Paydown
Watch your ownership percentage grow from that first payment to full equity. Every month, a little more of the property is truly yours.
Refinance Analysis
See how refinancing to a lower rate affects your remaining payments, total interest, and monthly cash flow. Timing matters.
Understand how debt affects your credit
Your credit score in CapitalLab responds to the same factors as real credit bureaus. Watch it rise with responsible borrowing and crash with overleveraging.
Debt-to-Income Ratio
Major FactorYour total monthly debt payments divided by gross monthly income. Lenders want this below 36%. In CapitalLab, taking on too much debt pushes your DTI up and your credit score down.
→Every new loan increases your DTI, making future borrowing harder and more expensive.
Payment History
Largest FactorOn-time payments build your score; missed payments destroy it. CapitalLab automatically makes debt payments from your bank account each month — if you have the cash.
→Running out of cash means missed payments, triggering score drops that take months to recover.
Credit Utilization
Significant FactorHow much of your available credit you're using. HELOCs and revolving credit lines factor into utilization. Drawing your full HELOC maxes your utilization ratio.
→High utilization signals financial stress to lenders, even if you're making every payment on time.
Credit Mix
Moderate FactorHaving different types of credit — mortgage, auto loan, personal loan — shows you can manage diverse debt. A healthy mix improves your score over time.
→A single type of debt limits your score potential. Diversified borrowing demonstrates financial maturity.
Find the payoff strategy that works for you
Avalanche, snowball, refinancing, consolidation — each strategy has trade-offs. Simulate them all and see which one eliminates your debt fastest.
Avalanche Method
Pay minimums on all debts, then throw every extra dollar at the loan with the highest interest rate. Mathematically optimal — saves the most money over time.
- Minimizes total interest paid
- Mathematically optimal payoff order
- Best for high-interest debt (personal loans, HELOCs)
- Saves thousands over the life of your loans
Snowball Method
Pay minimums on all debts, then throw extra at the smallest balance first. Psychologically powerful because you eliminate individual debts faster.
- Quick wins build momentum
- Reduces number of payments to track
- Psychologically motivating
- Best for people who need early victories
Refinancing
Replace an existing loan with a new one at a lower rate. When rates drop in the simulation, refinancing can save hundreds per month on your mortgage.
- Lower monthly payments immediately
- Reduces total interest over loan life
- Can change loan term (30yr to 15yr)
- Timing depends on rate environment
Debt Consolidation
Combine multiple high-interest debts into a single lower-rate loan. Simplifies your monthly payments and can reduce total interest if done right.
- Simplifies multiple payments into one
- Potentially lower blended interest rate
- Easier to track and manage
- Risk: extending term increases total cost
Master debt before it masters you.
Practice taking out mortgages, managing auto loans, and optimizing payoff strategies. Watch how every payment affects your credit score and net worth over 20 years.