Official Authority: Receita Federal do Brasil (RFB) • Currency: BRL (R$)
UtilityBase disponibiliza ferramentas matemáticas e financeiras completas adaptadas para a economia brasileira. Calcule alíquotas de ICMS (18% referência), simulações de financiamento imobiliário (Sistemas SAC e Price), financiamento de veículos CDC, conversão de salário mensal CLT (divisor 220 horas) para valor-hora e geração de faturas comerciais em Reais (BRL).
Tabela progressiva mensal do IRPF: Faixa 1 até R$ 2.259,20 (0% - isento); Faixa 2 de R$ 2.259,21 até R$ 2.826,65 (7,5%); Faixa 3 de R$ 2.826,66 até R$ 3.751,05 (15%); Faixa 4 de R$ 3.751,06 até R$ 4.664,68 (22,5%); Faixa 5 acima de R$ 4.664,68 (27,5%). Desconto simplificado mensal opcional de R$ 564,80 garante isenção efetiva até 2 salários mínimos.
Add or extract VAT for African countries (Zimbabwe 15%, South Africa 15%, Nigeria 7.5%, Kenya 16%, Ghana 15%) or any custom rate.
Calculate monthly loan payments, total interest cost, and view a complete amortization schedule for personal or business loans.
Calculate the future growth of your savings, monthly contributions, and investment returns over time.
Calculate petrol/diesel costs, toll fees, fuel consumption (L/100km), and split trip expenses per passenger.
Calculate your target hourly and daily consulting rates based on desired net take-home, business overhead, and taxes.
Generate professional, print-ready commercial tax invoices with itemized lines, VAT calculation, and PDF export.
Convert between USD, ZiG, ZAR, NGN, KES, GHS, ZMW, TZS, UGX, EUR, and GBP with live benchmark rates and custom rate override.
Estimate total monthly mortgage payments (PITI), amortization schedule, property taxes, home insurance, and PMI breakdown.
Forecast portfolio wealth accumulation with starting capital, regular monthly additions, expected returns, and inflation adjustments.
Calculate interest earned on high-yield savings (HYSA), project balance growth, and determine monthly savings needed to hit financial goals.
Determine how much you need to retire comfortably. Calculate your projected nest egg, monthly retirement income, and savings gap.
Calculate how fast you can eliminate credit card balances and debt. Compare minimum payments vs accelerated payoff to save thousands in interest.
Calculate percentage return on investment (ROI), annualized CAGR, net profit, and capital multiples for business, real estate, and financial assets.
Calculate non-compounding flat simple interest and total accrued amount for personal notes, auto loans, and short-term deposits.
Calculate discounted sale prices, markdown percentages, promotional coupons, sales tax additions, and total money saved.
Quickly calculate dining gratuity, total restaurant bills, and split costs evenly among multiple diners with clean whole-dollar rounding.
Estimate monthly car loan payments, trade-in equity credit, dealer documentation fees, sales tax, and total financing interest.
Calculate the compound impact of annual inflation on purchasing power, equivalent future currency value, and cumulative price increases.
Determine your business break-even sales volume in units and revenue, contribution margins, and target profit milestones.
Calculate total personal net worth by balancing liquid cash, real estate, investments, mortgages, vehicle loans, and credit cards.
Convert annual and monthly salaries to equivalent hourly, daily, weekly, and bi-weekly wage rates with custom overtime pay calculations.
Instantly convert between metric and imperial distance measurements including millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
Convert values between milligrams, grams, kilograms, metric tonnes, ounces, pounds, and US short tons with real-time accuracy.
Transform thermal readings between Celsius, Fahrenheit, and thermodynamic Kelvin with exact formulas and absolute zero safety validation.
Convert velocity and travel speeds between meters per second, kilometers per hour, miles per hour, knots, and feet per second.
Convert digital memory between bits, bytes, decimal SI units (KB, MB, GB, TB) and binary IEC units (KiB, MiB, GiB, TiB) with dual-system clarity.
Convert electrical current in amperes to kilowatts (kW) and kW to amps for DC, single-phase AC, and 3-phase AC circuits with power factor and voltage settings.
Solve for voltage (V), current (I), resistance (R), and electrical power (P) with instant calculations based on Ohm's Law and Joule's Law.
Calculate electrical power in watts, kilowatts, and horsepower with P=VI, P=I²R, and P=V²/R, plus energy usage (kWh) and utility costs.
Calculate net force, mass, or acceleration using Newton’s Second Law of Motion with Newtons, kilonewtons, and pound-force units.
Calculate kinetic energy in Joules, velocity, or mass using Ek = ½mv² with momentum analysis and real-world impact benchmarks.
Simulador completo de contracheque/holerite CLT com faixas progressivas do INSS 2025/2026, IRPF com desconto simplificado, dependentes e vale-transporte.
Official Basis: Tabela Oficial INSS e Receita Federal do Brasil
Cálculo de aviso prévio indenizado, 13º proporcional, férias proporcionais com 1/3 constitucional e multa rescisória de 40% do FGTS.
Official Basis: Consolidação das Leis do Trabalho (Decreto-Lei nº 5.452/1943)
Compara amortização pelo Sistema de Amortização Constante (SAC - parcelas decrescentes) com Tabela Price (parcelas fixas) nos padrões da Caixa.
Official Basis: Sistema Financeiro da Habitação (SFH/SFI)
Para uma jornada padrão de 44 horas semanais sob o regime CLT, utiliza-se o divisor legal de 220 horas por mês (44 horas ÷ 6 dias úteis × 30 dias = 220). Divide-se o salário bruto por 220 para obter o valor da hora normal. Para 40 horas semanais, o divisor é 200.
Como o Brasil possui tributos estaduais sobre mercadorias (ICMS), a UtilityBase pré-configura a alíquota de 18% (padrão em estados como São Paulo e Minas Gerais), permitindo personalizar para alíquotas de 17% a 22% ou simular o futuro IVA da Reforma Tributária.
Sim. A calculadora de Auto Loan modela o Crédito Direto ao Consumidor (CDC), permitindo informar valor do veículo, entrada, valor de troca de seminovo e taxa de juros mensal ou anual, gerando o custo total efetivo do financiamento em Reais.
Sim. Você pode inserir taxas anuais ou converter taxas mensais equivalentes para simular o crescimento de investimentos em renda fixa (CDB, LCI/LCA atrelados ao CDI) com aportes mensais constantes.
O Brasil adota o Sistema Internacional de Unidades (métrico: metros, quilômetros por hora, quilogramas, Celsius). Para ferramentas elétricas, as redes residenciais operam tipicamente em 127V ou 220V a 60Hz, ambas totalmente suportadas em nossas ferramentas de engenharia.