The most underrated fact in Turkish halal investing: you do not need a participation bank, a special app or anyone's permission. TEFAS, Takasbank's fund platform, makes every retail katilim fund buyable from whatever bank or brokerage app you already use, and Borsa Istanbul instruments like the Z30KP ETF and the ALTIN.S1 gold certificate trade in any brokerage account. Where you bank and whose funds you own are fully decoupled. This guide builds a complete interest-free portfolio in three decisions, then tells you exactly where the fees hide.
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The three-decision portfolio
Every functional portfolio answers three questions: where does liquid cash sit, what provides stability, and what provides growth. The katilim market has clean answers to all three.
| Slot | Instruments | What to know |
|---|---|---|
| Cash (weeks) | KLU or PPG money market katilim funds | Same-day or next-day liquidity; no repo, deposits or bills by prospectus; fee in KAP documents |
| Stability (months to years) | KTV, RBV or ZPK short-term sukuk funds; direct Treasury lease certificates for known horizons | Sovereign-heavy lease certificate carry; compare the three prospectus fees before choosing |
| Growth (years to decades) | Z30KP ETF for screened equity beta; KPC or RBH if active management earns its fee; KTJ for screened foreign tech | Z30KP publishes 0.50%; actives must beat it net of fees to deserve the slot |
| Ballast (structural) | ALTIN.S1 (no fee) or KZL (published 0.30%) for gold; KGM for a silver satellite | Size 10% to 25% and rebalance when it runs |
A worked example, not a recommendation
A 35-year-old saving monthly with a 20-year horizon might run: 10% KLU as the liquid floor, 25% KTV for stability, 45% Z30KP as the equity engine, 20% split between ALTIN.S1 and a small KGM silver position. A saver five years from a goal inverts it: heavier sukuk funds, lighter equity, gold intact. The allocation logic is ordinary portfolio construction; the katilim market's achievement is that every slot has a compliant instrument with real scale behind it. Adjust weights to your life, not to last year's league table.
The fee audit, slot by slot
Here is the uncomfortable house truth: of the instruments above, only three publish their costs where you can see them. Z30KP prints 0.50%, KZL prints 0.30%, ALTIN.S1 charges nothing. Every other fund on the list, KLU and KTV included, discloses its management fee only in the KAP prospectus, and typical short-term fund fees around 1% take a visible bite out of carry-type returns. Before buying any prospectus-only fund, open the KAP document, find the yonetim ucreti line, and write it down next to the fund code. Ten minutes of reading per fund is the entire cost of never overpaying. The market-wide problem is documented in our fee investigation.
Execution details that save money
- Buy TEFAS funds without entry or exit fees; if your bank adds a layer, it is the bank, and another distributor will not.
- Use limit orders for Z30KP and ALTIN.S1; spreads are your real cost on exchange instruments.
- Automate the monthly buys. Standing instructions into two or three funds beat discretionary timing for almost everyone.
- Rebalance on a calendar, once or twice a year, selling the sleeve that ran and topping up the one that lagged. In 2025 that meant trimming gold into strength, which felt wrong and was right.
- Keep the pension layer separate and funded first: a katilim BES adds a 20% state match no taxable account can match, per our step-by-step BES guide.
What this portfolio will and will not do
It will keep every lira interest-free, capture Turkish equity growth within the screen, and hold real assets against inflation. It will not beat Turkish inflation every year: TL carry funds run nominal returns that high inflation can fully consume, a reality we quantify in the real returns piece, and screened equity decouples from bank-led rallies by construction. The honest pitch for the halal portfolio is discipline and compliance at fair cost, compounded over decades, not annual bragging rights. For deeper allocations, the one-fund KCV multi-asset alternative and the whole product universe live on our investing page.
Frequently asked questions
Is one multi-asset fund simpler than three funds?
KCV, KT Portfoy's multi-asset katilim fund, is the legitimate one-decision answer: sukuk, screened equities, metals and participation accounts in a managed allocation. You trade control for simplicity and pay the manager for rebalancing you could do yourself twice a year. For genuinely hands-off savers it beats a neglected three-fund setup; for anyone willing to spend an hour a year, the self-built version is cheaper and exactly as compliant.
Where does crowdfunding or a stock-picking account fit?
As satellites, after the core exists. A TradePlus account for screened stock picks or small equity crowdfunding positions through fonbulucu and Fonangels can occupy a risk-seeking sleeve of perhaps 5% to 10%, funded by money whose loss would not move your plans. The core-satellite order matters: excitement is optional, the boring core is not.
Compare providers in your region
See side-by-side comparisons of Shariah-compliant products, or let our matcher recommend the best options for your situation.
Do I need to purify returns from these funds?
Katilim funds handle purification at fund level per their committees' guidance, and the 5% impermissible income allowance in the equity screen is the reason the question exists. Direct stockholders estimate and donate the impermissible slice themselves; fund holders can reasonably rely on the committee framework, and the strictest can add a small voluntary charity layer for comfort.