Financial Guides & Resources
Plain-English guides covering savings, investing, loans, mortgages, and affordability.
Savings & Investing
Build long-term wealth with compounding, monthly savings strategies, and realistic return assumptions.
How Much Will $100 a Month Grow To?
$100/month invested at a 7% average return grows to about $17,400 in 10 years, $52,000 in 20 years, and $122,000 in 30 years. The longer…
Read guideHow Much Will $500 a Month Grow To?
$500/month at 7% becomes roughly $87,000 in 10 years, $262,000 in 20 years, and $612,000 in 30 years. At 10% (long-term stock market aver…
Read guideHow Long Does It Take to Reach $1 Million?
At a 7% return, saving $500/month reaches $1M in about 36 years. $1,000/month gets there in about 28 years. $2,000/month does it in about…
Read guideEmergency Fund: How Much Should You Save?
Most people need 3–6 months of essential expenses in cash. Single-income households or freelancers should aim for 6–9 months. The starter…
Read guideSavings by Age: Are You On Track?
A common rule of thumb (Fidelity): 1× salary saved by 30, 3× by 40, 6× by 50, 8× by 60, 10× by 67. So if you earn $80K, target $80K by 30…
Read guideCompound Interest: Monthly vs Yearly
On a $10,000 balance at 5% for 10 years, yearly compounding gives $16,289. Monthly compounding gives $16,470. Daily compounding gives $16…
Read guideWhy Starting Early Matters More Than Amount
Someone who saves $200/month from 22 to 32 (then stops) usually ends up with more by retirement than someone who saves $200/month from 32…
Read guideHow Inflation Affects Your Savings
$10,000 in cash today is worth about $7,400 in 10 years at 3% inflation. To preserve purchasing power, your money has to earn at least th…
Read guideBest Interest Rate Assumptions to Use
Standard defaults: 4–5% for high-yield savings, 4–6% for bonds, 7% for diversified stocks (real, after inflation) or 9–10% (nominal). Use…
Read guideBeginner's Guide to Investing Consistently
Open a brokerage account or 401(k), invest in a low-cost broad index fund (like an S&P 500 or total-market fund), automate monthly contri…
Read guideHow Much Will $1,000 a Month Grow To?
$1,000/month invested at 7% grows to about $174,000 in 10 years, $524,000 in 20 years, and $1.22 million in 30 years. The longer the hori…
Read guideHow Much Should I Save by Age 30?
A common benchmark is to have 1× your annual salary saved by age 30 (e.g. $50K saved on a $50K income). If you're behind, focus on gettin…
Read guideHow Much Should I Save by Age 40?
By age 40, a common benchmark is to have 3× your annual salary saved (e.g. $240K on an $80K income). The realistic median is much lower —…
Read guideHow Much Money Do You Need to Retire?
A common rule of thumb is 25× your annual expenses. If you spend $50,000/year in retirement, aim for $1.25 million. If you spend $80,000/…
Read guide7 Best Compound Interest Examples (with Real Numbers)
The most powerful compound interest example: investing $200/month from age 25 to 65 at 8% grows to about $700,000 — yet only $96,000 of t…
Read guideHow Long Does It Take to Double Your Money?
Divide 72 by your annual return rate. At 6% your money doubles in 12 years; at 8% it's 9 years; at 10% it's roughly 7 years. This shortcu…
Read guideBest Savings Rate by Income (How Much to Save)
A widely cited benchmark is to save 20% of gross income (50/30/20 rule). Lower incomes should aim for 5–10% to start; higher incomes shou…
Read guideMortgage & Affordability
Understand what you can really afford, plus deposits, rules of thumb, and mortgage mechanics.
The 28/36 Rule Explained
Spend no more than 28% of your gross monthly income on housing (PITI), and no more than 36% on total debt payments (housing + car + stude…
Read guideHow Much Income Do You Need for a $300k House?
Most buyers need around $75K–$90K in household income to comfortably afford a $300K home with a 10% down payment at current rates (~6.5%)…
Read guideFHA vs Conventional Loan: Which Is Right for You?
Choose FHA if you have a lower credit score (under 680) or limited down payment (under 5%). Choose conventional if you have 5%+ down and…
Read guide5% vs 20% Down Payment: Which Is Better?
20% down avoids PMI, lowers your monthly cost, and saves tens of thousands of dollars in interest. 5% down lets you buy faster but costs…
Read guideHidden Costs of Buying a House
Plan for an extra 3–6% of the purchase price for closing costs upfront, plus 1–2% of home value annually for ongoing maintenance. On a $3…
Read guideHow Mortgage Amortization Works
Early in a mortgage, most of your payment goes to interest. By the final years, most goes to principal. On a $300K loan at 6.5%, year 1's…
Read guideFixed vs Adjustable Rate Mortgage (ARM)
Choose fixed-rate if you'll keep the loan more than 5–7 years or want predictability. Choose an ARM if you plan to move or refinance with…
Read guideWhat Credit Score Do You Need for a Mortgage?
Minimums: 580 for FHA, 620 for conventional, 580–620 for VA. Best rates start at 740+. Below 580 is very difficult.
Read guideHow Much House Can I Afford on $50k Salary?
$150K–$200K home price range. Monthly payment around $1,100–$1,400 (PITI). Requires roughly $15K–$25K in cash for down payment + closing…
Read guideHow Much House Can I Afford on $100k Salary?
$300K–$400K home price range comfortably. Monthly payment around $2,200–$2,800 (PITI). With 20% down and no other debts, you can stretch…
Read guideHow Much House Can I Afford on a $60K Salary?
On a $60K salary with moderate debts and a 10% down payment, most buyers can comfortably afford a home priced around $180,000–$240,000, w…
Read guideHow Much House Can I Afford on a $75K Salary?
On a $75K salary with moderate debts, most buyers can comfortably afford a home priced around $225,000–$300,000 with a typical 10% down p…
Read guideHow Much House Can I Afford on a $120K Salary?
On a $120K salary, most households can comfortably afford a home priced $360,000–$480,000 with moderate debt and a typical down payment.
Read guideMortgage Payment on a $400K House
With 20% down ($80K) on a $400K house at 6.5% over 30 years, the monthly principal & interest payment is about $2,022 — total monthly hou…
Read guideMortgage Payment on a $500K House
With 20% down ($100K) on a $500K house at 6.5% over 30 years, the monthly principal & interest payment is about $2,528 — full PITI usuall…
Read guideHow Much Income Do You Need for a $400K Mortgage?
To comfortably afford a $400,000 mortgage with the 28% rule, you typically need a household income of about $100,000–$120,000 per year —…
Read guideFHA Loan Requirements Explained
FHA loans require as little as 3.5% down with a 580+ credit score, a debt-to-income ratio under ~43%, two years of steady employment, and…
Read guideVA Loan vs Conventional Mortgage: Which Is Better?
For eligible veterans and active-duty service members, VA loans almost always win: 0% down, no PMI, and lower rates. Conventional loans o…
Read guideLoans & Debt
Pay off loans faster, compare repayment strategies, and avoid expensive debt mistakes.
What Happens When You Make Extra Loan Payments?
On a $300,000 mortgage at 6.5% (30-year), an extra $200/month cuts the loan to about 24 years and saves around $80,000 in interest. Extra…
Read guideBiweekly vs Monthly Loan Payments
Biweekly payments mean 26 half-payments per year = 13 full monthly equivalents = one extra payment annually. On a $300K mortgage at 6.5%,…
Read guidePersonal Loan vs Credit Card Debt
If your credit card APR is above ~15% and you have decent credit, a personal loan usually saves money. But it only works if you stop usin…
Read guideHow Much Interest Will You Really Pay?
On a $300K mortgage at 6.5% over 30 years, you pay back ~$682,000. A $25K car loan at 8% costs ~$30,400. A $5K credit card balance at 24%…
Read guideAvalanche vs Snowball Debt Method
Avalanche pays the highest-interest debt first (saves the most money). Snowball pays the smallest balance first (builds momentum and moti…
Read guideHow to Pay Off Debt Faster
List all debts, attack the highest-interest first (or smallest balance for motivation), refinance high-rate debt where possible, and appl…
Read guideWhat Is Loan Amortization?
Amortization splits each fixed payment between interest (calculated on the remaining balance) and principal (the rest). Early payments ar…
Read guideEarly Loan Repayment Explained
Paying off high-interest loans (above ~7%) early almost always wins. For low-rate loans (mortgages under 5%, federal student loans), inve…
Read guideHow to Pay Off Credit Card Debt Faster (Step-by-Step)
The fastest, cheapest way to pay off credit card debt is the avalanche method: pay minimums on everything, then put all extra cash toward…
Read guideCar Loan vs Personal Loan: Which Is Cheaper?
Car loans are almost always cheaper than personal loans (rates 1–4% lower) because the car secures the loan. Use a personal loan only whe…
Read guideHow to Pay Off a Car Loan Early
The fastest way to pay off a car loan early is to add extra principal each month, switch to biweekly payments, or make one extra full pay…
Read guideDebt Payoff Plan Example (Real Walkthrough)
A solid debt payoff plan lists every balance, rate and minimum, picks a method (avalanche or snowball), commits a fixed monthly extra pay…
Read guideHow Loan Interest Really Works (Plain-English Guide)
Most loans charge interest on the remaining balance each month. Your fixed monthly payment first covers that month's interest, then anyth…
Read guideHow to Reduce Total Interest Paid on a Loan
The biggest interest savers: choose a shorter term (15-yr vs 30-yr can cut interest by 60%+), make extra principal payments, refinance wh…
Read guideReady to run the numbers?
Pair any guide with one of our free calculators to plan your next financial decision.