Royales · Calculators & guides
Royales Finance
Numbers you can trust before you decide
Free calculators and plain-language guides for mortgages, loans, saving, investing, and everyday money choices.
Example snapshot: a $400,000 home with 20% down at 6.5% over 30 years is about $2,023 in principal and interest before taxes and insurance—illustrative only, not a quote.
Tools
Start with a calculator
Run a mortgage, loan, investment, retirement, or credit card estimate in your browser—no account required.
- Mortgage CalculatorEstimate a monthly housing payment with principal, interest, taxes, insurance, and HOA.Open calculator
- Loan CalculatorProject monthly payments, total interest, and total cost for a fixed-rate installment loan.Open calculator
- Compound Interest CalculatorSee how a starting balance and monthly contributions can grow when interest compounds over time.Open calculator
- Investment CalculatorIllustrate a future balance from principal, monthly contributions, and an assumed annual return.Open calculator
- Retirement CalculatorEstimate whether today’s savings and planned contributions may reach a retirement target.Open calculator
- Credit Card Payoff CalculatorEstimate how long a fixed payment may take to clear a card balance—and how much interest you could pay.Open calculator
Learn
Guides that explain the math
Short, practical articles on mortgages, credit, saving, investing, retirement, and budgeting—written to clarify ideas, not sell products.
Mortgages
- MortgagesHow Homeowners Insurance Fits Into Housing CostsSee how homeowners insurance affects the true monthly cost of owning a U.S. home, what drives premiums, and how escrow changes can surprise borrowers.Read guide
- MortgagesWhen Refinancing a Mortgage Can Make SenseLearn how to judge a U.S. mortgage refinance using rate drops, closing costs, break-even timing, term resets, and cash-out tradeoffs—with a clear worked example.Read guide
- MortgagesFixed-Rate vs Adjustable-Rate MortgagesCompare fixed-rate and adjustable-rate U.S. mortgages: payment stability, initial rates, adjustment caps, and the questions that decide which structure fits.Read guide
- MortgagesMortgage Closing Costs: What You Pay and WhyBreak down typical U.S. mortgage closing costs, what is negotiable, how estimates work, and how to plan cash so closing day is not a surprise.Read guide
Credit
- CreditHow Auto Loans Are Priced and Paid OffLearn how U.S. auto loans use amount financed, APR, and term to set payments, how amortization works on a car note, and which dealer add-ons a calculator misses.Read guide
- CreditHow Student Loan Interest Accrues and Adds UpLearn how U.S. student loan interest is calculated, when unpaid interest can capitalize, and how repayment choices change total cost using labeled examples.Read guide
- CreditHow Credit Card Interest Is CalculatedLearn how U.S. credit card APR, grace periods, and average daily balances turn into monthly interest charges—with round-number examples you can follow.Read guide
- CreditDebt Snowball vs Avalanche: Choosing a Payoff OrderCompare snowball and avalanche debt payoff methods with U.S. consumer loan math, motivation tradeoffs, and a labeled multi-debt example so you can pick a plan you will finish.Read guide
Investing & retirement
- InvestingHow Inflation Shrinks What Your Money BuysSee how inflation erodes purchasing power, why nominal returns can mislead, and how labeled examples help you plan long-term U.S. savings and retirement spending.Read guide
- InvestingAsset Allocation: Mixing Stocks, Bonds, and CashUnderstand what asset allocation means, how stocks, bonds, and cash play different roles, and why the mix and rebalancing usually matter more than chasing a single winner.Read guide
- RetirementRMDs: When Retirement Accounts Force WithdrawalsUnderstand U.S. required minimum distributions for traditional IRAs and 401(k)s—starting ages, how the IRS table works, taxes and penalties, and a labeled RMD example.Read guide
- RetirementChoosing Between a Roth IRA and a Traditional IRACompare Roth and Traditional IRAs on tax timing, 2026 contribution and income rules, withdrawals, and a labeled example so you can weigh the tradeoff without guessing market returns.Read guide
Saving & budgeting
- SavingHigh-Yield Savings, Money Markets, and CDs ComparedCompare high-yield savings, money market deposit accounts, and CDs on access, rate structure, insurance, and fit—using examples rather than promised yields.Read guide
- SavingWhat APY Means on Savings AccountsLearn how annual percentage yield (APY) works on U.S. deposits, how compounding turns a nominal rate into APY, and how to compare offers without treating any yield as locked in.Read guide
- BudgetingUsing Sinking Funds for Predictable Big BillsSet up sinking funds so irregular U.S. household costs—car insurance, holidays, repairs—are saved for on purpose instead of raiding emergency cash or credit.Read guide
- BudgetingBuilding a Monthly Budget That Matches Your CashCreate a practical U.S. monthly budget from take-home pay—covering bills, needs, wants, sinking funds, and debt—without forcing percentage rules that ignore real cash flow.Read guide
Calculators and articles on this site are for education only. They are not financial, investment, tax, legal, or professional advice.
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