Data processing agreement (DPA): when you need one

When a small business needs a DPA, controller or processor, what GDPR Article 28 asks for, Korea’s entrustment rule, and a breach timeline example.

Browse the 119 sample contracts

• Use QuoteBill in ChatGPT, Claude and Gemini

  Connect QuoteBill to ChatGPT, Claude or Gemini in about three minutes, then ask for quotations and invoices in plain words. Setup steps, example requests and privacy.

• Quote to invoice: convert an accepted quote

  Turn an accepted quote into a separate invoice draft in QuoteBill. Keep the original quotation, review dates and amounts, save, and prepare a PDF.

• Quotation vs invoice: differences and timing

  Compare a quotation and an invoice by purpose, dates, amounts, and next steps. Follow a practical project example and the matching QuoteBill workflow.

• How to write a quotation: fields and checklist

  Write a clear quotation with customer details, scope, quantities, prices, dates, and terms. Use a worked example and check the QuoteBill PDF before sharing.

• Invoice payment terms: Net 15, Net 30, due dates

  Write clear invoice payment terms with Net 15 and Net 30 examples, an explicit due date, deposit checks, and a practical follow-up checklist.

• Freelance invoice checklist: hours and fees

  Prepare a freelance invoice with a worked hourly-plus-fixed-fee example, scope and expense checks, billing details, and a PDF checklist before sending.

• International invoice currency: rates and fees

  Clarify invoice currency, settlement currency, exchange-rate examples, and bank fees. Review cross-border tax and QuoteBill country-setting limits.

• Invoice numbering: sequences and corrections

  Plan a traceable invoice numbering system with year and sequence examples, checks across devices, correction records, and QuoteBill numbering limits.

• Proforma vs invoice: payment and export use

  Compare a proforma, payment invoice, and commercial export invoice with a worked goods-order example and a checklist for choosing the right document.

• German invoice requirements: the mandatory details

  What a German invoice must contain under § 14 UStG, the small-amount invoice up to EUR 250, small-business and reverse-charge notes, and the e-invoice dates.

• Japan qualified invoice: the required entries

  The six entries a Japanese qualified invoice must carry, how the registration number is written, how amounts are split by tax rate and rounded, and when a simplified invoice is allowed.

• Korean tax invoice: required entries and the electronic form

  The four mandatory entries on a Korean tax invoice, the optional ones, when an electronic tax invoice must be issued and transmitted, and how it differs from an exempt-supply invoice.

• Quote, proforma, invoice, receipt, credit note: which to use

  Which document belongs to which stage of a sale: when each is issued, who issues it, what it shows and its tax effect, with one order traced end to end.

• Credit note vs invoice (and credit memo): how to issue one

  When to issue a credit note instead of editing an invoice, what it must show, a worked return example, and how it differs from a credit memo and a debit note.

• What a receipt must show (and receipt vs invoice)

  What to put on a payment receipt, how it differs from an invoice, how to handle deposits and part payments, and a worked example: two receipts, one invoice.

• Estimate vs quote: what binds you, with a remodeling example

  Estimate or quote: the practical difference, splitting labor, materials and equipment, clauses for hidden damage and changes, and a worked remodeling example.

• Are QuoteBill e-signatures legally binding? How they work

  What a QuoteBill e-signature records, how EU, US, Korean, Japanese and German law treat simple electronic signatures, and which documents need another form.

• Simple, advanced or qualified e-signature?

  The three eIDAS levels in plain words, where QuoteBill's simple signature fits, when it is enough, and how Korea, Japan and Germany draw the line.

• Japan’s stamp duty: do electronic contracts need a stamp?

  Why an electronic contract needs no Japanese revenue stamp, when a printout or paper original becomes taxable, and which paper contracts still need one.

• Japan: keeping an electronic contract as a tax record

  Keeping a contract made by email or e-signing service as data under Japan's electronic transaction rules: retention period, requirements, 2024 grace measure.

• Japan's Freelance Act: terms a client must put in writing

  What a Japanese client must state when commissioning a freelancer: the eight items, email and chat as valid means, the 60-day payment rule and where to turn.

• Free DocuSign alternative for simple contracts

  A free way to get a simple contract signed online: what QuoteBill E-Contracts does, what it does not, and when you need an advanced e-signature service.

• Free invoice template in Excel, Word or PDF

  Which format suits an invoice: Excel with live formulas, editable Word or PDF. Fill it in online, no download needed, with a worked example and a checklist.

• Free quotation template in Excel, Word or PDF

  Excel, Word or PDF for a quotation: live formulas while the price moves, editable wording, a final PDF. With a painting example and a pre-send checklist.

• 119 English contract templates to edit and save as PDF

  119 sample contracts with English clauses: read each in full, edit online, save as PDF. Why there is no Word file, and what to check before use.

• Compare free invoice generators: ten checks

  Ten product-neutral checks for a free invoice generator: formats, account, tax, numbering, data and price. Where QuoteBill meets each, and where it does not.

• How to write an invoice: a step-by-step example

  The ten parts of an invoice in order, a worked example with tax and a deposit, what changes in the US, UK, EU, Australia, Japan and Korea, and a final check.

• UK VAT invoice requirements: full, simplified, modified

  What HMRC says a full UK VAT invoice must show, when a simplified or modified invoice is enough, when no VAT invoice is needed, with a worked 20% example.

• EU VAT invoice requirements and the reverse charge

  The Article 226 list of what an EU invoice must show, the reverse charge on cross-border sales, the 15th-day deadline and the e-invoicing change of 2030.

• Australian tax invoice: GST requirements explained

  What an Australian tax invoice must show under and over $1,000, the $82.50 and 28-day rules, and what to send if you are not registered for GST.

• How to calculate VAT: add it, remove it, round it

  The three VAT formulas, taking tax out of a gross price without the usual mistakes, rounding per line or on the subtotal, and showing VAT on an invoice.

• Korea’s 3.3% freelancer withholding: how to invoice

  Why Korean clients deduct 3.3% from freelance fees, who it applies to, a worked 1,500,000-won example, how to write the invoice and what happens at year end.

• Deposit invoice: bill upfront, then invoice the balance

  How to agree, invoice and receipt a deposit, two ways to bill the balance, when tax falls due on a deposit, and a worked 30% example that adds up.

• Payment reminder email: three templates and timing

  A polite reminder schedule, three emails to adapt for an overdue invoice, how to handle part payments, and when interest or fees may be added.

• How to price freelance work: hourly, day rate or project

  Work out an hourly rate from your income target, costs and billable hours, turn it into a day rate and a project price, and choose the right pricing model.

• Retainer vs hourly billing: which to use and how to bill

  How a monthly retainer and hourly billing share the risk, one quarter billed both ways, what a retainer agreement should say, and how to invoice each.

• Freelance contract checklist: 12 points before signing

  Twelve points every freelance contract should settle, a website job filled in clause by clause, the client’s side of it, and how to sign it online.

• How to write a statement of work (SOW), with an example

  What a statement of work contains, how to write a scope that can be checked, a three-milestone example, acceptance and changes, and billing each milestone.

• When do you need an NDA? Mutual vs one-way

  When a non-disclosure agreement helps and when it does not, mutual or one-way, the clauses that matter, and a worked example of an agency pitch.

• How to get a contract signed online, step by step

  From draft to signed copy: sending the link and code, what to tell your client, reminders, deadlines, lost links and corrections, and what to keep afterwards.

• Influencer sponsorship contract: what to agree first

  What creators and brands should agree before a paid post: deliverables, approval, ad disclosure, usage rights, exclusivity and fees, with a worked example.

• Video editor contract: revisions, files and rights

  What a creator and a video editor should agree: included tasks, revision rounds, ownership, AI tools, account access, music licences and a monthly fee example.

• Licensing AI-generated artwork: what to put in writing

  What copyright offices say about images made with AI tools, what an honest licence should state, likenesses and tool terms, and a book cover example.

• SLA for a small SaaS: uptime, credits and support

  What an SLA covers, what 99.9% or 99.5% uptime means in minutes, how service credits work with a worked example, and support hours and exclusions.

• Data processing agreement (DPA): when you need one

  When a small business needs a DPA, controller or processor, what GDPR Article 28 asks for, Korea’s entrustment rule, and a breach timeline example.

• Create invoices from a spreadsheet automatically

  Three ways to turn spreadsheet rows into invoices, how to plan the sheet, a three-row example, how the API automation runs and the limits to plan around.

• Unpaid invoice: follow-ups, part payments and statements

  What a customer still owes after part payments and credit notes, how to follow up before and after the due date, and when to send a statement of account.