The Master Suite for Business, Finance & Creators
Instant precision calculators to price inventory, optimize 1099 taxes, quote sponsorships, analyze rental deals, and accelerate compound wealth.
Doubloon Bot-1 Multi-Marketplace Arbitrage
Simultaneously solves net payouts & ROI across eBay, Amazon, Poshmark, Mercari & StockX.
eBay Profit Calculator
Calculates managed payment fees, store subscription discounts, and net payout profit.
Etsy Fee Calculator
Solves 6.5% transaction fees, 3%+25¢ processing, and offsite ad fee deductions.
Poshmark Fee Calculator
Calculates $2.95 under-$15 flat fees vs 20% commission with seller shipping discounts.
Sneaker Payout Solver
Compares StockX vs GOAT vs eBay sneaker seller payouts and shoe size conversion.
1099 Self-Employment Tax Calc
Calculates 15.3% SE tax, federal bracket solver, state tax, and quarterly 1040-ES payments.
Freelance Hourly & Day Rate Solver
Solves target income, billable hours capacity, overhead reserves, and project rates.
Instant PDF Invoice Generator
Zero-login vector PDF invoice and payment receipt maker with printable layout.
Landed Cost Per Unit Solver
Calculates factory EXW, ocean freight per CBM, customs duty %, and domestic trucking.
Inventory Reorder Point & Safety Stock
Solves lead time demand and delay safety stock buffers to prevent FBA stockouts.
YouTube Money & RPM Solver
Estimates channel earnings across 12 content niches ($1.50–$28.00 RPM) and Shorts.
Sponsorship & Brand Deal Rate Card
Calculates brand quoting prices, paid ad whitelisting multipliers, and bundle quotes.
TikTok Creator Rewards RPM
Solves 60s+ qualified For You Page views, RPM tiers ($0.40–$1.30), and monthly payouts.
Rental Cash Flow & Cap Rate Solver
Calculates monthly net cash flow, Cap Rate %, Cash-on-Cash Return %, and annual NOI.
BRRRR Refinance & Equity Recycler
Calculates cash-out refinance equity, cash left in deal, and infinite ROI extraction.
Airbnb vs Long-Term Rental Solver
Compares nightly rates, occupancy %, cleaning fees, and furnishing payback periods.
Mid-Term Rental (MTR) Yield Solver
Calculates 30+ day Furnished Finder / traveling nurse rent premiums and furnishing payback.
Compound Interest Growth Simulator
Simulates monthly deposits, exponential compounding, and inflation-adjusted real value.
Coast FIRE Milestone Solver
Determines when compounding funds your retirement with $0 more saved.
Dividend Snowball & DRIP Yield
Simulates reinvestment growth, annual dividend hikes, and Yield on Cost (YOC).
Bitcoin & Crypto DCA Profit Solver
Simulates recurring purchases, satoshis stacked, and compounding CAGR returns.
Crypto Staking APY & Validator Rewards
Calculates Proof-of-Stake compound yields and validator commission fees.
Bitcoin 4-Year Halving Cycle Simulator
Models 4-year supply shock CAGR compounding, power-law growth, and satoshi stack milestones.
TDEE & Macro Split Solver
Calculates daily calorie needs, BMR, and gram targets for protein, fats, and carbs.
1-Rep Max Strength Matrix
Estimates 1RM using Brzycki and Epley formulas with a full percentage load table.
LLM & AI API Token Cost Estimator
Calculates monthly AI token costs across GPT-4o, Claude 3.5, Gemini, and Llama 3.
SaaS Cash Runway & Burn Rate Solver
Calculates startup net monthly cash burn, MRR growth, and zero-cash milestone date.
Auto Loan & Early Payoff Solver
Calculates monthly payment, total interest charges, and early principal payoff savings.
Used Car Flipping Profit Solver
Models auction purchase prices, repair budgets, DMV title fees, and resale margins.
EV vs Gas Annual Cost Comparison
Compares gas MPG vs home electricity rates to calculate 5-year fuel savings.
Dog Food Calorie & Raw Feeding Solver
Calculates daily RER/DER caloric needs, dry kibble cups, and BARF 80/10/10 meat ratios.
Pet Age in Human Years & Longevity Curve
Converts dog and cat age to human years using AVMA breed size biological curves.
Lifetime Pet Cost & Vet Budget Planner
Calculates 14-year lifetime ownership expenses across food, routine vet care, and insurance.
Geo-Arbitrage & Cost of Living Solver
Calculates monthly savings and purchasing power moving from US tech hubs to Bali or Lisbon.
IRS FEIE 330-Day Physical Presence Tax
Models foreign earned income exemption up to $126,500 for digital nomads living abroad.
Global Timezone Overlap Coordinator
Finds shared golden working meeting hours across San Francisco, London, Bali, and Tokyo.
Solar Panel Payoff & 25-Year ROI Solver
Calculates 30% IRS solar tax credits, net system cost, and payback period to breakeven.
Solar Battery & Powerwall Outage Solver
Models blackout runtime hours and daily solar recharging cycles for home backup.
Solar Cash Purchase vs Loan vs PPA
Compares 25-year lifetime wealth creation across cash, solar loans, and PPA contracts.
Wedding Budget & Category Solver
Models venue, catering, photo, and floral allocations with exact cost per guest.
Wedding Bar & Alcohol Consumption Estimator
Calculates exact bottles of wine, beer cases, and liquor needed for reception drinks.
Wedding Vendor Tipping & Gratuity Solver
Calculates standard etiquette tips and organizes cash envelopes for wedding vendors.
Subscription Audit & S&P 500 Opportunity Cost
Calculates monthly app drain and 10-year compound wealth lost by not investing.
Family Plan vs Individual Split Optimizer
Calculates per-person savings and group annual totals sharing multi-user accounts.
Subscription Cancellation Letter Generator
Generates legal cancellation notices and emails revoking recurring auto-debit authority.
Van Life vs Apartment Rent Solver
Models true monthly gas, insurance, camping fees vs city rent and house down payment timelines.
12V/24V Off-Grid Wire Gauge & Fuse Solver
Calculates AWG wire sizes, voltage drop percentages, and fuse ratings for camper electrical.
DIY Camper Van & Tiny House Build Budget
Estimates solar, insulation, plumbing, and cabinetry costs with market resale equity.
Heat Pump vs Gas & Oil Payoff Solver
Models annual heating bill savings, $2,000 IRA 25C tax credit, and net breakeven timeline.
Home BTU & HVAC Tonnage Sizing Solver
Calculates whole-home heating/cooling load and heat pump tonnage without short-cycling.
Smart Thermostat Energy Savings Solver
Calculates utility savings and hardware payback from sleep and away temperature setbacks.
Boat Total Cost of Ownership Solver
Models annual marina slip fees, winterization, insurance, fuel, and cost per day on water.
Marine Fuel Economy & Cruising Range Solver
Calculates vessel MPG, fuel cost per nautical mile, and safe range using USCG 1/3 rule.
Trolling Motor Battery Sizing & Runtime
Calculates hours on the water and amp draw comparing Lithium LiFePO4 vs Lead-Acid marine batteries.
AI GPU Cloud Inference & Training Cost Solver
Compare NVIDIA H100/A100 cloud cluster rates, token burn, and 60% savings vs AWS/GCP.
Serverless AWS Lambda vs Container Cost Solver
Calculates exact traffic threshold where Lambda functions become more expensive than ECS/K8s.
AI LLM Token vs Self-Host GPU Solver
Compares DeepSeek-R1 / Llama 3.3 vLLM cluster hosting costs vs pay-per-token API endpoints.
Fixed Index Annuity & Lifetime Income Solver
Calculates guaranteed GLWB retirement income, roll-up base compounding, and lifetime payouts.
Term vs Whole Life Insurance & S&P 500 Wealth
Compare premiums and calculate wealth accumulated by buying Term Life and investing the difference.
Dividend Yield & Monthly Paycheck Calculator
Model monthly passive dividend income, DRIP compounding, yield on cost (YOC), and milestone tracking.
DRIP Snowball vs Cash Payout Simulator
Simulate exponential compound wealth difference between reinvesting dividends vs taking cash payouts.
Dividend Safety & Yield Trap Audit Sheet
Score dividend safety, FCF payout ratios, and balance sheet leverage to prevent cuts and spot yield traps.
Self-Storage Investment & Cap Rate Calculator
Model commercial self-storage facility NOI, Cap Rate, breakeven occupancy, and Cash-on-Cash returns.
Self-Storage Unit Mix & SqFt Revenue Optimizer
Configure unit sizes (5x5, 10x10, 10x20), climate-control premiums, and blended rent per square foot ($/SqFt).
Storage Facility Valuation & NOI Solver
Underwrite commercial storage acquisitions, Cap Rate valuation multiples, and economic occupancy spread.
Self-Storage Feasibility & Due Diligence Audit Sheet
Audit 3-mile supply per capita, trade area traffic volume (VPD), and renter demographics before making offers.
Vending Machine Route & Unit ROI Solver
Model vending machine cash flow, drink/snack COGS margins, card reader fees, and location splits.
ATM Machine Surcharge & Vault Cash Solver
Evaluate independent ATM machine placements in barbershops, bars, dispensaries, and stores.
Vending & ATM Placement Agreement Sheet
1-page printable legal agreement and due diligence checklist for placing commercial machines.
Laundromat Acquisition & Valuation Solver
Underwrite commercial laundromat businesses, Turns-Per-Day, and water/gas utility cost burdens.
Express Tunnel & Subscription Car Wash Solver
Model monthly wash club memberships, retail drive-up volume, chemical overhead, and EBITDA margins.
Commercial Laundromat Utility Audit Sheet
Formulaic due diligence to verify seller revenue claims using actual municipal water and gas meters.
Glamping Dome & Safari Tent STR Solver
Model geodesic domes and safari tents on Airbnb, luxury ADR premiums, and landowner lease splits.
Geodesic Dome & Decking CapEx Sizer
Calculate dome diameter framing, insulation liner, wooden sub-deck, mini-split, and hot tub costs.
Glamping Land Lease Agreement Sheet
1-page printable legal agreement for placing glamping domes on private land with revenue sharing.
Roll-Off Dumpster Rental & Route Solver
Model hooklift trucks, 10–20 yard dumpster container fleets, haul pull rates, and disposal margins.
Landfill Tipping Fee & Surcharge Solver
Evaluate transfer station tipping rates vs customer overweight surcharges to prevent fee erosion.
Roll-Off Dumpster Service Agreement Sheet
1-page printable legal service agreement protecting equipment and enforcing landfill weight compliance.
Billboard Lease & Display Cash Flow Solver
Underwrite outdoor advertising assets, highway impression rates, and ground lease cap rate valuations.
Static Vinyl to Digital LED Conversion Solver
Model converting single-advertiser billboards into multi-slot 8-second digital displays with 4x revenue lift.
Billboard Ground Lease Agreement Sheet
1-page printable legal agreement for leasing highway commercial frontage land to outdoor sign operators.
Commercial Surface Parking Lot Solver
Model ALPR automated camera surface lots, monthly commuters, transient parking, and operating margins.
Stadium & Event Parking Surge Solver
Calculate windfall revenue from high-density stadium concerts, game days, and festival surge pricing.
Commercial Parking Lot Management Sheet
Standard operating contract for third-party automated parking lot operations and ALPR enforcement.
Micro-SaaS Valuation & Rule of 40 Multiples Solver
Underwrite subscription software, ARR multiples (4x-10x), churn, and exit valuations on Acquire.com.
Customer Acquisition Cost (CAC) to LTV Ratio Solver
Measure unit economics, customer lifetime value, and marketing payback velocity across paid ads and organic.
Micro-SaaS Acquisition Due Diligence Sheet
1-page printable technical and financial due diligence checklist for buying micro-SaaS businesses.
Airbnb & STR Arbitrage Cash Flow Solver
Underwrite leasing apartments, furnishing setup CapEx, and calculating net monthly spread over landlord rent.
Airbnb Cleaning Fee & Turnover Profit Solver
Optimize guest cleaning fees, manage cleaner payouts, and preserve positive laundry cash spreads.
Airbnb Corporate Lease & Arbitrage Rider Sheet
1-page printable legal addendum allowing commercial corporate subleasing and short-term rentals on residential leases.