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Car Affordability Calculator

Calculate your budget β†’

A car is one of the fastest ways to wreck your budget in South Africa β€” not because of the repayment alone, but because of everything that comes with it. Between fuel at R25/litre, insurance premiums that keep climbing, maintenance costs, and the hidden depreciation that eats away at your wealth, the true cost of car ownership often shocks first-time buyers.

This comprehensive guide will help you understand exactly how much car you can afford, calculate the total cost of ownership, avoid common dealer finance traps, and make a decision that strengthens rather than weakens your financial position.

The 15% rule: Your affordability anchor

The 15% rule is a time-tested guideline that prevents car debt from consuming your budget. Here's why it works and how to apply it:

Why 15% of gross income?

  • Leaves room for other expenses: Housing (30%), savings (20%), living expenses (25%), other debt (10%)
  • Accounts for total car costs: The repayment is just one component β€” insurance, fuel, and maintenance add another 10-15%
  • Provides buffer: If income drops or unexpected expenses arise, you're not immediately in crisis
  • Prevents being "car poor": Having a nice car but no money for anything else

What different salaries can afford (15% rule)

Gross Monthly Income 15% Max Repayment Approx Car Price (72mo, 12%) Car Category
R15,000 R2,250 R115,000 Entry-level used
R20,000 R3,000 R155,000 Budget used
R30,000 R4,500 R230,000 Good used / basic new
R40,000 R6,000 R310,000 Mid-range
R50,000 R7,500 R385,000 Upper mid-range
R60,000 R9,000 R465,000 Premium
R80,000 R12,000 R620,000 Luxury
R100,000 R15,000 R775,000 High-end luxury

When you can flex above 15%

The 15% rule is a guideline, not an absolute limit. You might reasonably go higher if:

  • No other debt: No bond, no credit cards, no personal loans
  • Strong emergency fund: 6+ months expenses saved
  • Car generates income: You use it for work (deliveries, sales, ride-hailing)
  • High savings rate: You're still saving 20%+ of income after car costs
  • Short loan term: Paying off quickly (48 months or less)

When you should stay below 15%

Consider a lower percentage if:

  • High debt load: Bond, credit cards, student loans
  • No emergency fund: One unexpected expense creates crisis
  • Unstable income: Commission-based, contract work, new job
  • High living costs: Expensive city, large family
  • Aggressive financial goals: Early retirement, property investment

Total cost of ownership: The real numbers

The monthly repayment is just the beginning. Here's what car ownership actually costs in South Africa:

Complete monthly cost breakdown

Cost Category Budget Car (R200k) Mid-Range (R350k) Premium (R500k)
Finance repayment (72mo) R4,100 R7,200 R10,300
Insurance R900 R1,500 R2,500
Fuel (1,500km/month) R2,000 R2,500 R3,000
Maintenance & tyres R800 R1,200 R1,800
Licensing (monthly) R200 R250 R350
Tolls & parking R300 R500 R800
Total monthly cost R8,300 R13,150 R18,750

Key insight: The total monthly cost is typically 2-2.5x the repayment amount. A R4,500 repayment becomes R9,000-R11,000 in true monthly costs.

Insurance costs in detail

Insurance varies dramatically based on multiple factors:

Factor Lower Cost Higher Cost
Car value R150k (R700/month) R500k (R2,500/month)
Driver age 35+ years Under 25 years (+50-100%)
Location Small town Johannesburg/Cape Town (+30-50%)
Parking Locked garage Street parking (+20-40%)
Driving history Clean record Claims/accidents (+30-100%)
Car type Sedan/hatchback Sports car/SUV (+20-50%)

Fuel costs calculation

Fuel is often the second-largest car expense after the repayment:

Example calculation: Driving 1,500km/month at R25/litre

  • Small car (6L/100km): 90 litres Γ— R25 = R2,250/month
  • Medium car (8L/100km): 120 litres Γ— R25 = R3,000/month
  • SUV (10L/100km): 150 litres Γ— R25 = R3,750/month
  • Large SUV (13L/100km): 195 litres Γ— R25 = R4,875/month

Annual impact: The difference between a fuel-efficient car and a gas-guzzler can be R20,000-R30,000 per year.

Maintenance costs by car age

Maintenance costs increase significantly as cars age:

Car Age Annual Maintenance Monthly Average Common Issues
0-3 years R3,000-R6,000 R250-R500 Services only (under warranty)
4-6 years R8,000-R15,000 R700-R1,250 Tyres, brakes, battery, minor repairs
7-10 years R15,000-R25,000 R1,250-R2,100 Major services, suspension, clutch
10+ years R20,000-R40,000+ R1,700-R3,300+ Engine, gearbox, major components

Depreciation: The silent wealth destroyer

Cars lose value rapidly, especially in the first few years:

Year Value Retained Annual Depreciation Example: R300,000 Car
Year 1 80% 20% R60,000 lost
Year 2 65% 15% R45,000 lost
Year 3 55% 10% R30,000 lost
Year 4 47% 8% R24,000 lost
Year 5 40% 7% R21,000 lost

The reality: A R300,000 new car is worth only R120,000 after 5 years β€” you've lost R180,000 to depreciation alone, plus R100,000+ in interest, plus R150,000+ in running costs. Total 5-year cost: R430,000+ for a car now worth R120,000.

Dealer finance traps to avoid

Dealership finance departments are skilled at making expensive cars seem affordable. Here are the traps to watch for:

Trap 1: Extended loan terms (72-84 months)

The pitch: "Only R4,500 per month!" (on a R400,000 car)

The reality:

  • You pay R50,000-R80,000 more in interest over 72 months vs 48 months
  • You're "upside down" (owe more than car value) for 4-5 years
  • You're still paying for the car when it's old and unreliable
  • If you need to sell, you'll owe money after the sale

Example: R300,000 car at 12% interest

  • 48 months: R7,900/month, total interest R80,000
  • 72 months: R5,700/month, total interest R110,000
  • Difference: R30,000 extra interest for R2,200/month savings

Trap 2: Balloon payments

The pitch: "Lower your monthly payment by 30%!"

The reality:

  • You still owe R60,000-R150,000 at the end of the term
  • You pay interest on the balloon amount for the entire loan term
  • You must refinance, sell, or pay cash when the balloon comes due
  • Often leads to rolling the balloon into your next car loan (debt spiral)

Example: R300,000 car with R100,000 balloon (33%)

  • Monthly payment: R4,200 (vs R5,700 without balloon)
  • After 72 months: You still owe R100,000
  • Total interest paid: R102,000 (on the full R300,000)
  • Car value after 6 years: ~R120,000
  • Result: You owe R100,000 on a car worth R120,000 β€” barely any equity

Trap 3: "Payment-focused" selling

The pitch: "What monthly payment are you comfortable with?"

The reality: They'll structure any car to fit your payment by extending terms, adding balloons, or increasing interest rates. You end up focusing on monthly affordability rather than total cost.

The fix: Know your maximum car price before entering the dealership, not just your maximum payment.

Trap 4: Bundled extras

The pitch: "For only R300 more per month, we'll add warranty, service plan, and insurance!"

The reality:

  • These products are heavily marked up (50-100% profit margin for dealer)
  • You finance them at the car loan interest rate (12-15%)
  • You can often buy better coverage cheaper independently
  • They increase your loan amount and total interest paid

Example: R30,000 in extras financed over 72 months at 12%

  • Monthly cost: R580
  • Total paid: R41,760
  • Interest paid: R11,760 just to finance the extras

Trap 5: The "monthly affordability" illusion

The pitch: Showing you cars based on monthly payment rather than total price

The reality: A R5,000/month payment could be:

  • R250,000 car, 48 months, no balloon, 12% interest
  • R350,000 car, 72 months, R80,000 balloon, 14% interest

Same monthly payment, vastly different total costs and financial outcomes.

New vs used: The affordability math

Understanding the financial case for used vehicles:

The depreciation advantage

A 2-3 year old car has already absorbed the steepest depreciation (20-30%), while still offering:

  • Modern safety features
  • Current technology (Bluetooth, reverse camera, etc.)
  • Reliable performance (most problems occur in first year)
  • Remaining manufacturer warranty (often 3-5 years)

Real comparison: R400,000 budget

Option New Car 2-Year-Old Used
Car price R400,000 R300,000 (25% depreciation)
Model 2026 VW Polo 1.0 TSI 2024 VW Polo 1.0 TSI Highline
Specification Base model Higher spec (alloys, leather, etc.)
Monthly payment (60mo) R8,900 R6,700
Total interest R134,000 R102,000
Value after 3 years R220,000 R180,000
Depreciation loss (3yr) R180,000 R120,000

The used car advantage:

  • R2,200/month lower payment (R132,000 over 5 years)
  • R32,000 less interest paid
  • R60,000 less depreciation loss
  • Higher specification for less money
  • Total savings: R224,000 over 5 years

When to buy new

New cars make sense when:

  • You plan to keep the car 10+ years (spreading depreciation cost)
  • You need the latest safety technology
  • You want full warranty coverage and peace of mind
  • You're buying a car known for long-term reliability
  • The manufacturer offers exceptional incentives (0% finance, cash-back)

When to buy used

Used cars make sense when:

  • You want the best value for money
  • You change cars every 3-5 years
  • You're on a tight budget
  • You want a higher-spec car for the same budget
  • You're buying from a reputable dealer with warranty

Choosing the right finance term

The loan term dramatically affects your total cost and financial flexibility:

Term comparison: R300,000 car at 12% interest

Term Monthly Payment Total Interest Total Paid Upside-Down Period
36 months R9,965 R58,740 R358,740 12-18 months
48 months R7,900 R79,200 R379,200 18-24 months
60 months R6,670 R100,200 R400,200 24-36 months
72 months R5,870 R122,640 R422,640 36-48 months

Key insights:

  • Extending from 48 to 72 months saves R1,930/month but costs R43,440 more in interest
  • Longer terms mean you're "upside down" longer (owe more than car value)
  • Shorter terms build equity faster and cost significantly less overall

The upside-down problem

Being "upside down" (negative equity) means you owe more than the car is worth. This creates problems:

  • Can't sell: You'd need to pay extra to settle the loan
  • Can't trade in: Must roll negative equity into next loan
  • Insurance gap: If car is written off, insurance pays market value, you still owe the difference
  • Financial stress: Stuck with a loan on a car you can't afford or no longer want

Recommended term lengths

  • Ideal: 48 months or less (if affordable)
  • Acceptable: 60 months maximum
  • Avoid: 72+ months unless absolutely necessary

Rule of thumb: Finance term should be shorter than your expected ownership period. If you plan to keep the car 5 years, finance it for 4 years maximum.

Understanding interest rates

Interest rates significantly impact your total cost. Here's what determines your rate:

Current interest rate landscape (2026)

  • Prime rate: 11.75%
  • Excellent credit (750+): Prime to prime minus 1% (10.75-11.75%)
  • Good credit (670-749): Prime to prime plus 2% (11.75-13.75%)
  • Average credit (600-669): Prime plus 2-3% (13.75-14.75%)
  • Poor credit (below 600): Prime plus 4-5% (15.75-16.75%)

Impact of interest rate differences

Example: R300,000 car over 60 months

Interest Rate Monthly Payment Total Interest Difference vs 12%
10% (Excellent credit) R6,375 R82,500 -R17,700
12% (Good credit) R6,670 R100,200 Baseline
14% (Average credit) R6,970 R118,200 +R18,000
16% (Poor credit) R7,275 R136,500 +R36,300

Key takeaway: A 4% difference in interest rate costs R36,300 more over 5 years. Your credit score literally costs or saves you tens of thousands of rands.

How to get the best interest rate

  • Improve credit score: Pay all accounts on time, reduce credit utilization
  • Shop around: Get quotes from multiple banks before visiting dealers
  • Larger deposit: Reduces lender risk, may qualify for better rate
  • Shorter term: Often qualifies for lower rate
  • Newer car: Banks prefer financing newer vehicles
  • Pre-approval: Gives you negotiating leverage at dealership

The power of a deposit

A deposit significantly improves your car financing outcome:

Benefits of a larger deposit

  • Lower loan amount: Less principal to pay interest on
  • Lower monthly payments: More affordable month-to-month
  • Less total interest: Saves thousands over loan term
  • Better interest rate: Lower risk for lender
  • Immediate equity: Not upside down from day one
  • Protection from depreciation: Buffer against value drops

Deposit impact example: R300,000 car, 60 months at 12%

Deposit Loan Amount Monthly Payment Total Interest Interest Saved
0% (R0) R300,000 R6,670 R100,200 β€”
10% (R30,000) R270,000 R6,005 R90,300 R9,900
20% (R60,000) R240,000 R5,335 R80,100 R20,100
30% (R90,000) R210,000 R4,670 R70,200 R30,000

Optimal deposit: 20% minimum. This provides significant interest savings, immediate equity, and protection from being upside down.

Pre-approval: Your negotiating advantage

Getting pre-approved finance from your bank before shopping gives you significant advantages:

Benefits of pre-approval

  • Know your budget: Exact amount you can borrow at what rate
  • Negotiating power: Dealer must beat your pre-approved rate or match it
  • No pressure: Can walk away if deal isn't right
  • Faster process: Finance already approved, just need to finalize
  • Compare apples to apples: Know if dealer finance is actually better

How to get pre-approved

  1. Check your credit score: Know where you stand
  2. Apply to your bank: Often easiest with existing relationship
  3. Compare multiple banks: Apply to 2-3 banks for best rate
  4. Get it in writing: Formal pre-approval letter with rate and amount
  5. Use within validity period: Usually 30-60 days

Using pre-approval at the dealership

When they ask about finance: "I have pre-approval from my bank at 12%. Can you beat that rate?"

If they offer better rate: Great! Take it. But compare all terms, not just rate.

If they can't beat it: Use your pre-approval. You got the best deal available.

Alternative transport: Do you really need a car?

Before committing to car ownership, consider alternatives:

When alternatives make sense

  • Urban living: Good public transport, walkable neighborhoods
  • Low usage: Drive less than 5,000km/year
  • Tight budget: Car costs would strain finances
  • Environmental concerns: Want to reduce carbon footprint
  • Short-term need: Only need transport for 1-2 years

Alternative options

Option Monthly Cost Pros Cons
Public transport R800-R1,500 Cheap, no maintenance Limited routes, time-consuming
Ride-hailing (Uber) R2,000-R4,000 Convenient, no ownership costs Expensive for frequent use
Car sharing R1,500-R3,000 Access without ownership Limited availability
Bicycle/E-bike R200-R500 Healthy, cheap, eco-friendly Weather dependent, limited range
Car rental (weekends) R1,000-R2,000 Flexibility when needed Expensive for frequent use

Cost comparison: Car ownership vs alternatives

Scenario: Single person in Johannesburg, 1,000km/month driving

Option Monthly Cost Annual Cost 5-Year Cost
Own car (R250k) R9,500 R114,000 R570,000
Public transport + Uber R2,500 R30,000 R150,000
Car sharing + weekend rental R3,000 R36,000 R180,000
Savings (5 years) R390,000 - R420,000

Key insight: Alternatives can save R400,000+ over 5 years. That's enough for a house deposit or substantial investment portfolio.

When to replace vs repair

Knowing when to keep repairing your current car versus replacing it:

Keep repairing when:

  • Annual repairs are less than 50% of car's current value
  • Car is reliable for essential travel
  • Car is paid off (no monthly payment)
  • Repair costs are predictable and manageable
  • Car meets your needs (size, safety, features)

Consider replacing when:

  • Annual repairs exceed 50% of car's value
  • Car becomes unreliable (breakdowns, strandings)
  • Safety concerns (outdated safety features, structural issues)
  • Fuel efficiency is significantly worse than modern alternatives
  • Car no longer meets your needs (growing family, job change)
  • You're spending more on repairs than a car payment would cost

The math: Repair vs replace

Current car: 10-year-old vehicle worth R60,000

  • Annual repairs: R25,000
  • No monthly payment
  • Insurance: R600/month
  • Fuel: R2,500/month
  • Total annual cost: R62,200

Replace with: R200,000 used car (5 years old)

  • Monthly payment: R4,500 (R54,000/year)
  • Annual repairs: R8,000
  • Insurance: R1,000/month (R12,000/year)
  • Fuel: R2,000/month (R24,000/year)
  • Total annual cost: R98,000

Analysis: Keeping the old car saves R35,800/year despite higher repair costs. However, if reliability is poor or safety is compromised, replacement may be worth the premium.

Negotiating the best deal

Strategies for getting the best price and terms:

Before you shop

  • Research prices: Know what the car should cost (multiple dealers)
  • Get pre-approved: Know your finance rate and amount
  • Set maximum price: Decide before entering dealership
  • Check trade-in value: Know what your current car is worth
  • Time your purchase: Month-end, quarter-end, year-end often better deals

At the dealership

  • Negotiate price first: Before discussing finance or trade-in
  • Focus on total price: Not monthly payment
  • Be willing to walk away: Your strongest negotiating tool
  • Get everything in writing: Before signing anything
  • Read the contract: Check all numbers match what was discussed

Common negotiation tactics to resist

  • "Let me check with my manager": Creates pressure and delay
  • "This deal is only good today": False urgency
  • "What payment do you want?": Shifts focus from total price
  • "We're losing money on this deal": Rarely true
  • Four-square worksheet: Confusing tool to hide true costs

Common car buying mistakes

Mistake 1: Buying more car than you need

The problem: Buying an SUV for school runs, luxury car for basic transport

The cost: R2,000-R5,000/month extra in payments, fuel, insurance

The fix: Buy for your actual needs, not aspirational lifestyle

Mistake 2: Focusing only on monthly payment

The problem: Extending term, adding balloon to get "affordable" payment

The cost: R30,000-R80,000 extra in interest, perpetual debt

The fix: Focus on total price and total cost of ownership

Mistake 3: Skipping the pre-purchase inspection

The problem: Buying used car without independent mechanical inspection

The cost: R20,000-R50,000 in hidden repairs

The fix: Always get independent inspection (R500-R1,000, saves thousands)

Mistake 4: Rolling negative equity into new loan

The problem: Trading in car when you owe more than it's worth

The cost: Financing old debt plus new car, perpetual upside-down situation

The fix: Pay off current car or keep it until you have equity

Mistake 5: Not shopping insurance before buying

The problem: Discovering insurance is R3,000/month after purchase

The cost: Stuck with unaffordable car or expensive insurance

The fix: Get insurance quotes before committing to purchase

Mistake 6: Financing accessories and extras

The problem: Adding R30,000 in accessories to the loan

The cost: Paying 12-15% interest on accessories, total cost R40,000+

The fix: Pay cash for accessories or skip them

Mistake 7: Not considering total cost of ownership

The problem: Budgeting only for repayment, shocked by insurance, fuel, maintenance

The cost: Monthly costs 2-3x higher than expected

The fix: Calculate total monthly cost before buying

Mistake 8: Buying emotionally

The problem: Falling in love with a car beyond your budget

The cost: Financial stress, overpaying, buyer's remorse

The fix: Set budget before shopping, stick to it

Mistake 9: Ignoring fuel efficiency

The problem: Buying fuel-thirsty car without calculating fuel costs

The cost: R15,000-R30,000/year extra in fuel

The fix: Calculate annual fuel cost based on your driving distance

Mistake 10: Not reading the fine print

The problem: Signing without understanding balloon, fees, penalties

The cost: Unexpected costs, trapped in bad deal

The fix: Read entire contract, ask questions, take time

Your car buying checklist

Before you buy, ensure you've covered everything:

Before shopping

  • ☐ Calculated maximum affordable car price (15% rule)
  • ☐ Calculated total monthly cost budget (25% rule)
  • ☐ Checked credit score and report
  • ☐ Obtained pre-approval from bank
  • ☐ Researched car prices at multiple dealers
  • ☐ Determined must-have vs nice-to-have features
  • ☐ Researched insurance costs for target vehicles
  • ☐ Calculated fuel costs based on consumption and distance

At the dealership

  • ☐ Test drove the car
  • ☐ Got independent inspection (used cars)
  • ☐ Negotiated total price (not monthly payment)
  • ☐ Compared dealer finance rate to pre-approval
  • ☐ Declined unnecessary extras and add-ons
  • ☐ Read entire contract before signing
  • ☐ Verified all numbers match verbal agreement
  • ☐ Got all promises in writing

After purchase

  • ☐ Arranged insurance before driving off lot
  • ☐ Set up automatic payments
  • ☐ Created maintenance schedule
  • ☐ Set aside emergency repair fund
  • ☐ Considered gap insurance if financed

Calculate your exact car budget

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Frequently asked questions

How much should I spend on a car in South Africa?

Keep your car repayment under 15% of gross monthly income, and total car costs (repayment, insurance, fuel, maintenance) under 25%. For example, earning R30,000/month gross means a maximum R4,500 repayment and R7,500 total monthly car costs. This typically translates to a car worth R230,000 on a 72-month loan at current interest rates.

Are balloon payments a good idea?

Balloon payments lower your monthly instalment but leave a large lump sum (typically 20-40% of the car price) owing at the end, with interest charged on it throughout the loan term. They make cars seem more affordable than they are and often lead to rolling the balloon into your next car loan, creating a cycle of perpetual debt. Avoid balloons unless you have a clear plan to pay them off.

What is the total cost of owning a car in South Africa?

Beyond the repayment, expect to pay: insurance (R800-R3,000+/month), fuel (R2,000-R4,000/month), maintenance and tyres (R1,000-R2,000/month), and licensing (R2,000-R4,000 annually). A R4,500 repayment often becomes R8,000-R12,000 in true monthly costs. Over 5 years, a R300,000 car can cost R600,000-R800,000 total when including interest, insurance, fuel, and maintenance.

Should I buy a new or used car?

Buying a 2-3 year old used car is typically the smartest financial choice. New cars lose 20-30% of their value in the first two years (R60,000-R90,000 on a R300,000 car). A well-maintained used car offers most of the reliability and features of a new vehicle at a significantly lower price. For the same monthly budget, you can afford a higher-spec vehicle or a smaller loan with shorter term when buying used.

What car can I afford on R30,000 per month salary?

On R30,000 gross monthly salary, following the 15% rule means a maximum R4,500 monthly repayment. This affords approximately R230,000 on a 72-month loan at 12% interest. However, with insurance (R1,200), fuel (R2,500), and maintenance (R1,000), your total monthly car costs would be around R9,200 (31% of gross income), which exceeds the recommended 25% limit. Consider a cheaper car around R180,000-R200,000 for true affordability.

How long should I finance a car for?

Finance a car for the shortest term you can comfortably afford β€” ideally 48-60 months maximum. While 72-month loans have lower monthly payments, you pay significantly more interest (R30,000-R50,000 extra on a R250,000 car) and risk being 'upside down' (owing more than the car is worth) for years. Never finance a car for longer than you plan to keep it. A good rule: finance term should be shorter than expected ownership period.

What interest rate should I expect on car finance in South Africa?

Car finance interest rates in 2026 typically range from prime (11.75%) to prime plus 5% (16.75%), depending on your credit score and deposit size. Excellent credit scores (700+) may qualify for prime or prime minus 1%. Average credit scores typically get prime plus 2-3%. Poor credit or no deposit can mean prime plus 4-5%. Always shop around between banks and negotiate β€” even 1% difference saves R10,000-R20,000 over a 5-year loan.

How much deposit should I put down on a car?

Aim for a 10-20% deposit minimum. A larger deposit reduces your loan amount, monthly payments, total interest paid, and protects you from being 'upside down' (owing more than the car's value). On a R300,000 car, a 20% deposit (R60,000) reduces your loan to R240,000, saving approximately R25,000 in interest over 60 months at 12%. If you can't save a deposit, you probably can't afford the car.

When should I replace my car versus keep repairing it?

Consider replacing when: annual repair costs exceed 50% of the car's current value, the car becomes unreliable for work/essential travel, safety features are outdated, or fuel efficiency is significantly worse than modern alternatives. However, maintaining a paid-off car is almost always cheaper than financing a new one. A R30,000 annual repair bill is still less than R60,000+ in annual car finance payments plus insurance on a new vehicle.

What are the hidden costs of car ownership in South Africa?

Hidden costs include: toll fees (R500-R2,000/month in Gauteng), parking fees (R500-R1,500/month in cities), traffic fines (R500-R3,000 annually), car washes (R200-R400/month), unexpected repairs not covered by warranty, depreciation (15-20% annually), and opportunity cost (money tied up in a depreciating asset instead of invested). Many people budget only for the repayment and are shocked when total costs are 2-3x higher.

Disclaimer: This guide provides general information about car affordability and should not be considered financial advice. Individual circumstances vary significantly. Interest rates, insurance premiums, and car prices are based on 2026 figures and subject to change. Consult with a financial advisor for personalized guidance based on your specific situation, income, and financial goals.