All Accounting & Invoicing Tools (30 Free Utilities)
A comprehensive suite of free, client-side bookkeeping calculators and invoicing utilities designed for European freelancers, ZZP'ers, and small businesses. All tools are built with strict integer cents arithmetic, aligned with Dutch Belastingdienst tax requirements.
Invoice Generator
Create professional, EU/Belastingdienst-compliant invoices with live preview, custom VAT rates, and instant PDF/print export.
Invoice Number Generator
Generate structured, sequential invoice identifiers using prefixes, calendar years, and zero-padded sequence numbers.
Invoice Due Date Calculator
Calculate payment due dates from an invoice issue date and terms (Net 14, Net 30, Net 60, End of Month) with leap year support.
Late Payment Interest Estimator
Estimate statutory late payment interest and collection compensation under European Late Payment Directives and Dutch civil law.
Pro Forma Invoice Helper
Generate clear, legally compliant pro forma invoices with draft watermarks for advance quotations and customs declarations.
Credit Note Calculator
Calculate negative invoice amounts, VAT reversals, and partial refunds for returned items or billed price adjustments.
VAT Calculator
Calculate VAT amount and gross total from a net amount with Dutch standard (21%), reduced (9%), or custom tax rates.
Reverse VAT Calculator
Extract the exact net price and VAT component from any gross VAT-inclusive receipt or price tag.
VAT Rate Comparison Calculator
Compare side-by-side how standard, reduced, and international VAT rates affect final consumer pricing and profit margins.
VAT-Inclusive & Exclusive Converter
Instant bidirectional converter between gross retail prices and net business prices at any tax bracket.
VAT Breakdown Calculator
Enter multiple invoice line items across different VAT brackets (21%, 9%, 0%) to calculate accurate per-rate subtotals and grand totals.
VAT Period Estimator
Estimate your quarterly (Q1–Q4) or monthly Belastingdienst BTW-aangifte liability by comparing collected output VAT and deductible input VAT.
Hourly Rate Calculator
Calculate the minimum hourly fee needed to cover target net personal income, business overhead, taxes, paid holidays, and non-billable time.
Freelance Income Calculator
Project your monthly and annual gross freelance revenue from billable hours and rates, with estimated tax deductions.
Profit Margin Calculator
Calculate Gross Profit, Profit Margin percentage, and clearly distinguish margin from markup to protect pricing profitability.
Markup Calculator
Determine the required selling price and resulting gross revenue based on direct costs and desired markup percentage.
Break-Even Calculator
Calculate the exact unit sales volume and revenue milestone required to cover fixed overhead and variable unit costs.
Business Expense Calculator
Categorize operational expenses (software, equipment, travel, office) and estimate deductible tax savings and net outlay.
Income & Expense Summary
Summarize gross turnover and operational expenses to determine Operating Profit (EBITDA), profit margin, and expense ratio.
Invoice Payment Tracker
Track sent, received, and overdue client invoices in your browser with balance summaries, payment status tags, and CSV export.
Timesheet Calculator
Calculate daily and weekly billable hours, deduct lunch breaks, and handle overnight shifts past midnight automatically.
Billable Hours Calculator
Convert accumulated hours and minutes into invoiceable fee amounts with custom rounding increments (6m, 15m, 30m).
Mileage Reimbursement Calculator
Calculate tax-free business travel deductions using the official Belastingdienst rate (€0.23/km) or custom rates.
Business Trip Expense Calculator
Aggregate total business travel costs including mileage, air/train fares, hotel lodging, meals, and client entertainment.
Expense Splitter
Equitably divide shared project bills, software licenses, or coworking office costs among multiple partners or contractors.
Discount Calculator
Calculate discounted prices, total savings, and stackable coupon reductions for sales proposals and promotional pricing.
EU VAT / Sales Tax Comparison Tool
Compare VAT rates across major European jurisdictions (Netherlands 21%, Germany 19%, Belgium 21%, France 20%, UK 20%).
Savings & Tax Reserve Planner
Plan your monthly cash flow by setting aside the right percentage of income for income tax, health insurance (Zvw), and emergency buffers.
Asset Depreciation Estimator
Calculate annual tax write-offs for capital business equipment (computers, cameras, office furniture) using straight-line depreciation.
Invoice Payment Reconciliation Helper
Compare billed invoice amounts against actual bank deposits to instantly pinpoint underpayments, overpayments, or merchant fee deductions.
European & Dutch Bookkeeping Standards
Understanding Invoicing Obligations
In the Netherlands, every entrepreneur issuing B2B invoices must issue them before the 15th day of the month following the month of delivery. Invoices must include both parties' legal registration, unique consecutive numbering, and a strict breakdown of VAT per applicable rate.
Record Retention (Bewaartermijn)
Under Article 52 of the Algemene wet inzake rijksbelastingen (AWR), entrepreneurs must retain all invoices, timesheets, trip logs, and bank statements for a statutory minimum of 7 years (10 years for immovable property).