A flip-up places a Delaware C-Corp (or, less commonly for Turkish founders, a Cayman holdco) above your Turkish operating company: shareholders exchange their Turkish shares for topco stock, investors hold the US entity, operations and the team stay in Türkiye. It is the structure most US funds require before wiring — partly for legal familiarity, partly because their fund documents and tax planning assume a US issuer. The single most important rule: flip early, while the valuation is low, because the share exchange is generally a taxable disposal for Turkish shareholders.
Delaware direct or Cayman sandwich?
For Turkey-based startups raising from US venture funds, the standard answer is a Delaware C-Corp directly: it is what YC, NVCA documents and US investors are built around, and the added complexity of a Cayman layer rarely pays for itself at startup scale. The Cayman sandwich (Cayman topco → Delaware sub → local opco), popular among LatAm companies, mainly earns its keep where founders expect non-US strategic exits or want to avoid US corporate tax on a global group that will not be predominantly American. If your investors, market and exit are US-shaped, keep it simple: Delaware on top, A.Ş. below.
The mechanics, step by step
- Incorporate the topco — Delaware filing takes days; the cap table of the new entity is designed to mirror the Turkish one post-exchange, including the ESOP pool.
- Share exchange. Each Turkish shareholder contributes their A.Ş. shares to the topco in exchange for its stock. On the Turkish side this is a share transfer: board approvals, endorsement and delivery of share certificates, share ledger entries — plus valuation support for the exchange ratio.
- Turkish formalities. Foreign-shareholder notifications, tax numbers for the topco, and clean documentation of the exchange for the inevitable future diligence.
- IP and contracts. Decide deliberately what sits where. Most flips keep operating IP in the A.Ş. with a licence or transfer to the topco depending on the commercial model; either way, the chain must be written, stamped where needed, and priced at arm’s length.
- ESOP migration. Turkish-level option promises are exchanged for a US plan — ISOs for US taxpayers, and for the Turkish team either NSOs or, increasingly, plan designs that preserve the Turkish techno-park/R&D-centre income-tax exemption on option gains where conditions are met.
- Intercompany layer. A services/development agreement between topco and A.Ş. with defensible transfer pricing — this is what funds payroll in Türkiye after investors wire into Delaware.
Tax — the part that punishes late flips
- Turkish side. The exchange is in principle a disposal at market value. For individual founders, gains on joint-stock company shares can be exempt where statutory holding-period conditions are met — printed share certificates and a two-year clock are the classic planning tools, so certificate issuance timing matters years before the flip. For corporate shareholders, participation-exemption rules have their own holding and ratio conditions. None of this is automatic; it is planned or it is lost.
- US side — QSBS got dramatically better. For topco stock issued after July 4, 2025 (the One Big Beautiful Bill Act), Section 1202 now offers a tiered exclusion — 50% after three years, 75% after four, 100% after five — with the per-issuer cap raised to the greater of $15M or 10× basis, and the gross-asset ceiling lifted to $75M. A timely flip can put founders and US investors inside one of the most generous capital-gains regimes available anywhere; stock issued before that date stays under the old five-year/100% rules.
- 409A discipline. Once the topco grants options, it needs a 409A valuation refreshed at least annually or on material events — pricing options below a defensible FMV is a problem you cannot retrofit away.
Life after the flip
The flip is a beginning, not an event: consolidated reporting expectations from investors, transfer-pricing documentation on the intercompany agreement, Turkish withholding analysis on any royalty or service flows, US tax filings for the group (including the topco’s reporting on its Turkish subsidiary), and keeping BOTH share ledgers — Delaware stock ledger and A.Ş. pay defteri — telling the same story. Funds re-diligence the flip at every round; the cheapest time to fix gaps is before they are found.
The mistakes we keep fixing
- Flipping at a high valuation after the round is already negotiated — converting a paper step into a real tax bill.
- Forgetting the ESOP: Turkish option promises left behind at the A.Ş. level, surfacing as cap-table surprises at Series A.
- IP “moved” by a one-line assignment with no consideration, no stamp-tax analysis and no transfer pricing — unwound painfully in diligence.
- Treating SAFEs signed by the A.Ş. as automatically portable to the topco; they must be assigned or reissued deliberately.
- No intercompany agreement, so the Turkish entity runs on undocumented headquarters funding for a year.
Structure essentials
- Flip-up — the mechanics in glossary form
- Delaware General Corporation Law and C-Corporation — why this entity type
- QSBS — the Section 1202 exemption, post-OBBBA
- 409A valuation — pricing US options after the flip
Equity after the flip
- ISOs and RSUs — US instruments for the team
- ESOP and vesting — migrating the Turkish plan to the topco
Documents and checklists
- YC SAFE documents — most flips happen right before a SAFE round
- NVCA model documents — the priced-round stack on the US side
Deeper reading
When you need counsel
We run flips end to end — Delaware formation, share exchange, Turkish-side valuation, FX and certificate formalities, IP migration, ESOP transition and the intercompany layer — coordinated with US counsel where needed. See US Company Formations & Flip-Ups and Startup & Scaleup Advisory; for the round that usually follows, the SAFE Guide.