Introduction
Many freelancers finish the technical work and postpone invoices, deposits, and tax reserves. That delay creates cash crunches and period-end panic. Basic paperwork and reserve discipline are prerequisites for growth.
This article is a high-level frame: what belongs on an invoice, deposit and milestone logic, an introduction to Turkey's e-invoice concepts, and setting aside a tax share from revenue. It is not legal or tax advice—confirm current obligations with a qualified advisor.
What Belongs on an Invoice
An invoice is proof of work and an accounting record, not only a pay request. Party identities, date, document number, service description, amounts, tax lines where applicable, and payment reference should be clear.
Tie descriptions to milestones: 'Web app Phase 1 – admin panel delivery'. Vague 'consulting' lines hurt both sides. If you bill in foreign currency, state currency and FX / payment terms.
- Seller and buyer identity details
- Date and unique document number
- Service / milestone description
- Amount, tax, total, due date
Deposits and Interim Payments
A deposit shares risk: you reserve capacity; the client shows seriousness. 30–50 percent is common; longer projects need milestone plans. Tie the deposit to an invoice or advance document.
Gate final delivery on final payment—source, production access, or design files after funds clear. Keep a contractual right to pause on late payment. Trust alone is not cash-flow management.
- Contract approval
- Deposit invoice / collection
- Kickoff and work
- Interim milestone invoices
- Final invoice → delivery
Turkey Notes: E-Invoice Concepts
In Turkey, digital document duties such as e-fatura or e-arsiv can apply depending on taxpayer type (individual / company), turnover, and revenue-administration thresholds. Who must use what—and when—varies; do not assume.
Self-employment receipts, withholding, and related topics also depend on your setup. Cross-border invoices may involve VAT exemption or export-of-services questions that need specific review. These notes are orientation only—use a local advisor for implementation.
Without a paperwork system, part of your income is unfinished tax waiting to surprise you.
Setting Aside Tax
Do not treat gross receipts as spendable income. Move a percentage X (per your advisor's range) into a separate account on every payment so period dues do not hit your personal limit.
Simple rule: auto-transfer to the tax / social buffer the day money arrives. Collect expense receipts monthly, not at year-end. Clarify subscriptions, office, and training categories with your bookkeeper.
# Simple cash split (example — set rates with your advisor)
receipt = 100_000
tax_buffer_rate = 0.30 # example buffer
ops_fund_rate = 0.10
owner_pay = receipt * (1 - tax_buffer_rate - ops_fund_rate)
# on the day funds arrive:
# 30k → tax account | 10k → ops | 60k → owner payInternational and Tools
Cross-border rails (Wise, Payoneer, wires) add fees and FX. Bake them into pricing. State who bears which taxes in the contract (for example withholding).
Invoicing tools reduce errors. Spreadsheets can start you; growth needs proper software. Remember backups and access security.
- Separate tax / ops / personal accounts
- Monthly reconciliation ritual
- Digital archive of expense proofs
- Quarterly review with your advisor
Conclusion
Invoice and tax discipline can feel dull; it is the infrastructure of freedom. Clear documents, deposit-backed cash flow, and a reserve account prevent surprises.
Use this as a checklist and personalize rules with your advisor. A correct setup is done once; a wrong setup repeats every period.