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.
Smart Tool Matcher: What are you solving today?
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.
50-State Property Tax & Homestead Exemption Directory
Compare effective tax rates, median annual tax bills, and homestead exemption shields across all 50 states.
50-State Airbnb & STR Regulations Directory
Compare state STR statutes, municipal registration permit requirements, and transient lodging taxes.
50-State STR Lodging & Hotel Tax Directory
Compare state Transient Occupancy Tax (TOT) rates, county lodging taxes, and Airbnb auto-collection rules.
50-State Real Estate Deed Transfer Tax Directory
Compare state transfer taxes, documentary stamps (FL/PA/DE), and Buyer vs Seller closing customs.
50-State Commercial Property Tax & NNN Abatement Directory
Compare assessment ratios, effective commercial millage rates, and Triple Net (NNN) pass-throughs.
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.
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.
50-State EV Charger & Clean Vehicle Rebates Directory
Compare state EV tax credits, Level 2 home charger utility rebates ($500–$2,500), and off-peak TOU rates.
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.
50-State Solar Net Metering & NEM 3.0 Directory
Compare retail 1:1 Net Metering states, California NEM 3.0 avoided-cost export rates, and buyback rules.
50-State Solar Renewable Energy Certificate (SREC) Market Directory
Compare state-level SREC trading prices ($85-$400/MWh), compliance carve-outs, and annual cash yields.
50-State Commercial Solar Property Tax & C-PACE Directory
Compare 100% property tax assessment exemptions, EPC sales tax waivers, and active C-PACE clean energy programs.
50-State Commercial Liquor License Quotas & Values Directory
Compare state quota caps, open-market license transfer values ($15k to $550k+ in NJ, PA, FL), and state fees.
50-State Short-Term Rental (STR) Laws & Lodging Tax Directory
Compare state STR preemption laws, primary residence rules, permit costs, and County TOT rates.
50-State Commercial Truck Tolls & IFTA Diesel Tax Directory
Compare Class 8 (5-axle) toll turnpike rates per mile, IFTA quarterly diesel tax rates, and highway fees.
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.
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.
LLM Token & AI Inference Cost Estimator
Compare OpenAI GPT-4o, Claude 3.5 Sonnet, DeepSeek V3/R1, and Gemini monthly token bills.
AI System Prompt & Schema Architect
Build production-grade system prompts, role personas, and strict JSON schemas for LLM agents.
S-Corp vs LLC Self-Employment Tax Savings
Calculate self-employment tax savings, reasonable W-2 salary, and net FICA cash preserved.
1031 Exchange Tax Deferral & Timeline Solver
Calculate capital gains deferred and generate 45-day ID and 180-day closing deadlines.
50-State Corporate Income Tax & Franchise Tax Directory
Compare state corporate taxes, 0% corporate tax havens, and annual minimum franchise taxes.
50-State Paid Family Leave & Disability Payroll Tax Directory
Compare mandatory PFML/SDI payroll tax rates, employer vs employee splits, and taxable wage caps.
HSA Triple-Tax-Advantage & Wealth Solver
Calculate 2026 contribution limits, FICA tax shields, and compound tax-free stock growth.
HDHP + HSA vs Traditional PPO Health Plan Solver
Compare total annual out-of-pocket costs, employer match, and net insurance premium savings.
FAA Part 107 Commercial Drone Pricing Solver
Calculate minimum billable hourly rate, photo/video package pricing, and equipment depreciation.
Drone LiPo Battery Cycle & Fleet TCO Solver
Calculate cost per flight minute, battery retirement cycles, and monthly replacement reserves.
Startup Equity Dilution & SAFE Note Solver
Calculate founder equity retention, pre vs post-money SAFE conversions, and Series A option pools.
USPTO Trademark & IP Filing Cost Estimator
Calculate official USPTO government class fees, legal preparation costs, and statement of use fees.
ADU Build Cost & Monthly Rental Income Solver
Calculate garage conversion vs detached ADU build costs, loan payments, and net monthly rental cash flow.
Drywall, Paint & Concrete Material Estimator
Calculate paint gallons, standard 4x8 drywall sheets, and concrete cubic yards by room square footage.
50-State ADU Zoning & Permit Laws Directory
Compare state-level ADU statutes, maximum square footage, setback rules, and grant eligibility.
Fair Rent Split Calculator by Room Size & Perks
Weight common living space equally while adjusting for private square footage, ensuite baths, and parking.
Sublease Rent & Utility Proration Calculator
Calculate exact day-rate prorations for mid-month move-ins, security deposits, and shared utility balances.
Podcast Sponsorship CPM & Dynamic Ad Solver
Calculate monthly podcast advertising income across pre-rolls, mid-rolls, and dynamic back-catalog ads.
YouTube Video AdSense & RPM Revenue Predictor
Estimate monthly creator payouts across niche categories, long-form mid-rolls, and YouTube Shorts.
Tesla Powerwall & Home Battery ROI Solver
Calculate Time-of-Use rate arbitrage, 30% Federal ITC tax credits, and blackout backup hours.
Solar Inverter Sizing & Clipping Loss Solver
Analyze DC-to-AC power ratios (ILR), midday clipping losses, and inverter upgrade economics.
50-State Battery Storage & SGIP Rebates Directory
Compare state battery subsidies, SGIP rebates, and utility Virtual Power Plant (VPP) cash payouts.
Vending Machine & Micro-Market Profit Solver
Calculate route profitability, wholesale COGS margins, location commissions, and machine payback.
Franchise Net Profit & Royalty Fee Solver
Calculate franchisee net income, franchisor royalty fee cuts (4-6%), national ad fund, and EBITDA.
Geodesic Dome & Glamping Site ROI Solver
Calculate dome kit expenses, nightly ADR revenues, seasonal occupancy, and cash-on-cash ROI.
RV Park Pad Development & Cash Flow Solver
Analyze civil site infrastructure expenses, 30A/50A electric/septic hookup costs, and monthly pad yields.
Laundromat Turns-Per-Day & Utility Ratio Solver
Calculate washer/dryer vend cycle pricing, water and gas utility ratios (22%), and monthly store EBITDA.
Commercial Equipment Lease vs Buy Solver
Compare equipment leasing agreements vs purchasing with Section 179 first-year bonus depreciation write-offs.
Express Tunnel & Unlimited Wash Club ROI Solver
Model monthly subscription memberships, chemical cost/car, water utility reclaim, and net cash flow.
Self-Serve & In-Bay Automatic Cash Flow Solver
Analyze revenue per wand bay, touchless automatic rollover cycles, commercial vacuums, and boiler utilities.
Self-Storage Unit Mix & Cap Rate Solver
Analyze net rentable square footage, climate vs drive-up rates ($/sqft), OPEX per sqft, and Cap Rates.
Boat & RV Storage Lot Cash Flow Solver
Model land development capex, 12x40 parking space layout per acre, covered steel canopy rent, and NOI.
Mobile Home Park Lot Rent & Cap Rate Solver
Underwrite manufactured housing, Tenant-Owned (TOH) vs Park-Owned (POH), water submetering, and NOI.
Vacant Lot Infill & Chattel Note Solver
Analyze single-wide acquisition costs, setup/skirting expenses, tenant chattel notes, and park equity.
Pool Cleaning Route Unit Economics & Valuation Solver
Analyze residential service contracts, chemical margins per pool, filter cleans, and route valuations.
Variable Speed Pool Pump Energy Savings Solver
Calculate pump motor affinity law electricity reductions, utility kWh rebates, and equipment payback.
Roll-Off Dumpster Rental Cash Flow Solver
Model 10-40 yard containers, landfill tipping fees/ton, diesel haul costs, turn velocity, and net EBITDA.
Commercial Trash Compactor ROI Solver
Analyze multi-family and commercial property waste compaction ratios, pull reductions, and utility savings.
ATM Location Profit & Vault Cash ROI Solver
Model surcharge pricing ($3.50), merchant commission splits, interchange rebates, and vault cash returns.
ATM Route Cash Forecasting & Portfolio Solver
Analyze multi-terminal networks, rotating vault capital requirements, reload cycles, and annual portfolio yield.
Digital LED & Static Billboard Cash Flow Solver
Model 8-slot digital LED blip rotations, highway impressions, ground lease rent, and commercial Cap Rates.
Landowner Billboard Ground Lease & Royalty Solver
Analyze 15% to 25% gross ad revenue sharing models, annual CPI escalations, and commercial property equity.
Bulk Ice & Pure Water Vending Machine Solver
Analyze 24/7 automated ice kiosks, 10lb/20lb bag profit margins, municipal utility costs, and EBITDA.
Commercial RO Water Filtration & TDS Solver
Model commercial reverse osmosis gallon-per-day (GPD) sizing, mineral rejection, and filter replacements.
Coworking Floorplan Yield & Desk Density Solver
Model workstation mix (hot desk, dedicated, private offices), master lease costs, and net sqft yield.
Virtual Office & Digital Mailbox MRR Solver
Analyze zero-footprint commercial address memberships, mail scanning fees, and 85%+ profit margins.
24/7 Unstaffed Keycard Micro-Gym Cash Flow Solver
Underwrite boutique fitness studios, 24/7 RFID keycard door access, recurring dues, and break-even member targets.
Personal Trainer Floor Rent & Split Solver
Compare flat monthly floor rent ($500–$900/mo) vs percentage session splits for independent fitness trainers.
Automated Self-Serve Dog Wash Kiosk Solver
Analyze coin-op modular pet wash bays, warm water utility overhead, chemical profit margins, and EBITDA.
Dog Wash Water, Gas Heater & Chemical Dilution Solver
Model municipal water utilities per cycle, tankless gas water heating efficiency, and 50:1 shampoo dilution.
Commercial Drone LiDAR & Survey Mapping Solver
Underwrite commercial drone surveying contracts, per-acre LiDAR point cloud pricing, and monthly EBITDA.
Drone Survey Flight Time & Battery Fleet Solver
Model commercial LiDAR flight duration, survey grid path distances, and rotating battery charging fleet logistics.
Commercial Marina Boat Slip & Mooring Yield Solver
Underwrite wet slip rental cash flow, linear foot rates ($18–$35/ft/mo), and liveaboard utility surcharges.
Marina Dry Stack Rack Storage & Forklift Solver
Model cantilever dry stack boat barn capacity, linear foot rates, heavy forklift leasing, and EBITDA.
Industrial Railcar Storage & Demurrage Solver
Underwrite private rail siding footage, daily car storage rates ($12–$25/car/day), and Class I switch fees.
Class I Railroad Switch Fee & Demurrage Solver
Model short-line interchange switch billing, per-car turnout fees, and excess dwell demurrage penalties.
Micro-Warehouse & Industrial Flex-Space NNN Solver
Underwrite small-bay contractor warehouse units (1,200–2,500 sqft), NNN base lease rates, and Cap Rates.
Flex Condo Sellout vs NNN Hold Solver
Model developer unit sellout profits ($240–$350/sqft), development equity multiples, and NNN rental holds.
Automated Contrast Therapy Studio Solver
Underwrite boutique unstaffed recovery studios (infrared sauna + 38°F cold plunge), membership MRR, and EBITDA.
Cold Plunge Chiller BTU, UV-C & Ozone Sizing Solver
Model commercial plunge cooling BTU demand, 1.0 HP chiller duty cycles, 38°F power draw, and sanitization.
Commercial Rooftop Solar PPA & Cash Flow Solver
Underwrite commercial industrial solar PPAs (250–1,000 kW), 25-year compounding escalator yields, and SRECs.
Community Solar Subscriber Acquisition & Churn Solver
Model community solar farm subscriber portfolios (1–5 MW), 10% bill credit discounts, and churn replacement drag.
Commercial DC Fast Charging (DCFC) Hub Solver
Underwrite Level 3 DC Fast Charging stations (150kW–350kW), retail driver markup ($0.48/kWh), and demand charges.
BESS Battery Buffer & EV Demand Charge Shaving Solver
Model commercial battery energy storage (BESS) peak shaving to mitigate utility demand spikes and capture TOU spreads.
Commercial Vertical Hydroponic Container Farm Solver
Underwrite insulated 40ft container farms, restaurant microgreen yields ($28/lb), and USDA REAP grants.
Hydroponic DLI, PPFD & HVAC Dehumidification Solver
Model Daily Light Integral (DLI), target LED PPFD (240 µmol), Quest dehumidifier sizing, and EC/PPM dosing.
Covered Boat & RV Storage Facility Solver
Underwrite 12x45 cantilevered canopy stalls, gravel vs asphalt paving CAPEX, and 6.75% cap rate valuations.
AASHTO RV Turning Radius & Drive Aisle Solver
Calculate 45ft-55ft motorhome turning radii (48ft-54ft), 60° angled drive aisles (38ft), and canopy lot density.
Digital LED Billboard Truck Fleet Solver
Underwrite 3-sided P3.9 outdoor LED box trucks, 8-slot rotation yield ($1,250/mo), and exclusive event buyouts.
Mobile Billboard Route Impressions (DEC) & CPM Solver
Model Daily Effective Circulation (DEC), arterial hourly traffic flow (AADT), and effective advertiser CPM.
Commercial & Utility 1MW BESS Grid Storage Solver
Underwrite front/behind-the-meter 1MW–10MW BESS, ISO nodal LMP arbitrage (ERCOT, CAISO), and 40% IRA ITC.
BESS Fast Frequency Response & Ancillary Market Solver
Model Regulation Up/Down ancillary pricing ($28.50/MW-hr), response speed (250ms), and 10-yr LFP degradation.
Luxury Glamping Geodesic Dome Eco-Resort Solver
Underwrite 24ft insulated all-season geodesic domes, high ADR ($295/night), timber decks, and resort EBITDA.
Glamping Timber Deck, Solar & Septic Sizing Solver
Model circular timber deck square footage (1,018 sqft), 48V off-grid solar (4.4 kW), and low-flow septic drain fields.
Commercial High-Spin Laundromat & Solar Pre-Heat Solver
Underwrite 450G high-spin washer extractors, solar thermal boiler offsets (35% gas cut), and 4.5x SDE valuations.
Commercial Ozone & Solar Thermal Boiler Offset Solver
Model laundry boiler therm reductions via ozone (O3) cold-water injection (80% gas reduction) and detergent cuts.
Commercial Semi-Truck Parking & Drop Yard Solver
Underwrite Class 8 tractor-trailer parking ($325/mo), gravel/asphalt paving CAPEX, and 7.0% cap rates.
AASHTO WB-67 Truck Geometry & Paving Sizing Solver
Model WB-67 swept path turning templates (53.5ft), drive aisles (52ft–65ft), and 80k-lb aggregate subbases.
Commercial Rooftop Cellular Antenna & Tower Lease Solver
Underwrite 5G telecom carrier leases ($2,750/mo), 3% compounding escalators, and 19.5x buyout valuations.
Cell Tower Lease Buyout vs Annuity NPV Solver
Compare lump-sum cash buyout offers (18x–22x rent) vs holding 25-yr compounding carrier lease payments.
Empire AI Deal Evaluator & Institutional Scorecard
Scores any business acquisition or commercial deal (Grade A+ to F), calculates DSCR, Cap Rate, and SWOT.
Commercial Debt & SBA 7(a) / 504 Loan Matcher
Calculate SBA debt service, DSCR qualification (min 1.25x), down payment equity (10%), and post-debt cash flow.
Embeddable Financial Calculator Widget Generator
Embed any of our 275+ institutional solvers on your website or blog with 1-click responsive iframe code.
Bug Reports & Feature Request Triage Desk
Live inbox for calculation errors, user bug reports, and new calculator requests across all 50 suites.