Your Turkey payroll provider applied a January parameter change late, and two months of employer premiums had to be corrected. The CFO now wants a replacement shortlist within the quarter. Three proposals arrive. All of them promise full compliance, a dedicated team, and a smooth transition.
None of them explains how they will carry over each employee’s year-to-date tax data. None says who pays if a filing is late because of their error.
Those two questions decide most outcomes in payroll outsourcing in Turkey, and a sales deck rarely answers them. The evidence a provider can hand over does. Below you will find the scope split, a 2026 test for bidders, the evidence to request, a weighted scorecard, transition checks, and contract questions.
Datassist has run Turkish payroll since 1999 and calculates more than 1.5 million payrolls a year. These checks come from what we see when clients arrive from another provider.
Table of Contents
- Start With What the Provider Will Own
- Turkey Payroll Provider Due Diligence in 2026
- Build an Evidence-Based Shortlist
- A Payroll Provider Selection Scorecard
- Switching Payroll Providers in Turkey Without Losing Data
- Contract Questions to Settle Before You Sign
- Frequently Asked Questions
- Key Takeaways
- Payroll Outsourcing in Turkey: What to Do Next
Start With What the Provider Will Own
Outsourcing moves the work but not the legal responsibility. Your Turkish entity remains the employer in the eyes of SGK (the Social Security Institution) and the tax office, so a late or wrong filing still lands on you. For a primer on the model itself, see our complete guide to payroll outsourcing in Turkey.
Before you send a single request for proposal, write down the split. A Turkey scope usually covers:
- Monthly input collection, with a fixed cutoff date and a named owner on your side
- Gross-to-net calculation, including income tax, stamp tax, and employee and employer social security premiums
- SGK notifications for hires and leavers
- The combined monthly withholding tax and premium service return, due by the 26th of the following month
- Bank payment files and payslips, which Turkish Labor Law No. 4857 requires employers to provide
- Final pay for leavers, including notice pay and severance pay where it applies
- Social security incentive checks and applications
- Year-end reporting and support during SGK or tax inspections
Mark each line “provider does,” “provider prepares and we approve,” or “we do.” Every bidder then prices the same scope, and you see who quietly excludes the hard parts. A good payroll outsourcing partner will push back on gaps in this list rather than accept it as written.
Turkey Payroll Provider Due Diligence in 2026
Turkey gave buyers a ready-made test this year. Law No. 7566, published in the Official Gazette on December 19, 2025, changed several payroll parameters at once:
- The Invalidity, Old Age, and Death premium rose from 20% to 21%, with the employer share moving from 11% to 12%, from January 2026.
- The Treasury-funded discount on that employer share fell from four points to two points, also from January 2026.
- The ceiling on earnings subject to premiums rose from 7.5 to 9 times the minimum wage from January 1, 2026.
Every Turkey payroll provider had to apply these changes in January payroll, so ask each bidder to show you how they did it. Good payroll provider due diligence asks for the client notice they sent, the date their software was updated, and a redacted January payslip or premium report showing the new rates.
A provider that tracks regulation can produce this quickly. One that waited for a client to complain tends to send a general statement instead.
Regulation Note: Under Article 81(ı) of Law No. 5510, the two-point discount is only available when monthly filings and payments are made on time and the employer has no overdue premium or administrative fine debt to SGK. A provider’s missed deadline can therefore cost you the discount, on top of late payment charges.
So timeliness has a price. Ask for the provider’s on-time filing record across its client base, and how it tracks social security incentives month by month. Then ask what happens when your inputs arrive late and their deadline is at risk. You want a written escalation path, and “we will manage it” is not one.
Build an Evidence-Based Shortlist
Most proposals list the same strengths. Request the proof behind each claim and keep two or three providers for a full evaluation.
| Claim in the proposal | Evidence to request | Red flag |
|---|---|---|
| “Fully compliant Turkish payroll” | A redacted monthly reconciliation pack: gross-to-net summary, premium report, and tax return totals tied together | Only a sample payslip |
| “Proactive regulatory monitoring” | Their 2026 change log and the client notices sent for Law No. 7566 | No dated notices |
| “Dedicated team” | Names, roles, and languages of the people who will run your payroll, plus their backup | A shared support address |
| “Secure and audited” | The ISO 27001 certificate with its scope, and the latest ISAE 3402 Type 2 report | A certificate that covers a different entity or service |
| “Data protection compliant” | A draft data processing agreement, the sub-processor list, and where payroll data is stored | No answer on data location |
| “Trusted by companies like yours” | Two references with a similar headcount and structure in Turkey | References only from other countries |
An ISAE 3402 Type 2 report tests whether controls operated over a period, while a Type 1 report only describes their design at one date. Ask which one you will get and which period it covers. Datassist holds ISO 27001 and ISAE 3402 because global audit teams ask for exactly this.
On data protection: under Turkey’s personal data law, your entity is the data controller and the provider is the data processor.
Article 12 of Law No. 6698 makes the controller jointly responsible with the processor for data security. If payroll data leaves Turkey under a standard contract, Article 9 requires that contract to be notified to the authority within five business days of signature. Your payroll provider selection should confirm who files that notification.
A Payroll Provider Selection Scorecard
Once you have evidence, score it. Start with three knock-out questions. A provider that fails any of them leaves the process, whatever its price:
- Is statutory filing ownership written into the scope, line by line?
- Will the provider sign data processing terms that meet Turkish law?
- Does the contract guarantee return of all payroll data in a usable format at exit?
Then score the remaining bidders. The weights below are only an illustration. Set your own, but agree on them before the first presentation so scores do not drift toward a favorite.
| Criterion | Weight | A score of 5 looks like | A score of 1 looks like |
|---|---|---|---|
| Compliance evidence | 25 | Reconciliation pack and dated 2026 change log provided | Claims without documents |
| Transition plan | 20 | Named data list, parallel run, and reconciliation sign-off | “We handle onboarding” |
| Team and service model | 15 | Named specialists with backup and a written escalation path | Ticket queue |
| Controls and data security | 15 | Type 2 assurance report and a complete processing agreement | Certificate only |
| Reporting and integration | 10 | Group reporting in English and a tested file format for your systems | Manual exports |
| Commercial clarity | 15 | Every recurring and one-off service priced against your scope | Base fee with open-ended extras |
Score on a 1 to 5 scale, multiply by the weight, and total out of 500. Two people should score independently. Where they differ by two points or more, go back to the evidence. When procurement or internal audit later asks why one provider won, you have the answer on paper.
Use the scorecard as your payroll outsourcing checklist for the final round. If you want a wider view of costs and benefits before that round, our guide Turkey Payroll Outsourcing: Cost, Benefits & Provider Selection sets out the full evaluation.
Switching Payroll Providers in Turkey Without Losing Data
Switching payroll providers in Turkey carries one risk that global teams often miss. Income tax on wages is calculated on a cumulative basis through the calendar year. Each employee’s year-to-date tax base decides which bracket the next payroll falls into. If that figure is wrong after a mid-year switch, every later payslip in the year is wrong too.
Ask each finalist how it will collect and verify this data from your current provider:
- Year-to-date tax base for every employee, reconciled to the tax returns already filed
- Service start dates and prior service, which drive severance pay and notice periods
- Annual leave balances and any carried-over entitlements
- Incentive records showing which employees and workplaces were claimed under which program
- SGK workplace registration and access to the online declaration systems, transferred under your control
- Payroll history in a format you can read without the old provider’s software
Then insist on a parallel run of at least one full cycle. Both providers calculate the same month, and someone explains every difference line by line before the new provider goes live. Name the sign-off owners in advance: usually the HR lead for inputs and the finance lead for totals.
Avoid going live in a month with parameter changes or a bonus run, and allow for your current provider’s notice period. Our payroll migration checklist sets out the full sequence by phase.
Risk: The most common transition error we see is a new provider that starts from January figures instead of the real year-to-date base. The first payslips look correct and the tax brackets go wrong a few months later.
Contract Questions to Settle Before You Sign
The contract decides who pays when something goes wrong, so settle these points before you sign:
- Errors and penalties. If an administrative fine, late payment interest, or a lost discount results from the provider’s error, who pays, and up to what limit?
- Changes in law. Are regulatory updates such as Law No. 7566 included in the fee, or billed as change requests?
- Cutoffs and response times. What is the monthly calendar, and how are response and resolution times classified by priority?
- Sub-processors and data location. Who else touches your payroll data, and in which country?
- Audit rights. Can your auditors receive the assurance report each year, and can you run your own payroll compliance audit on request?
- Exit. What exit assistance is included, in what format is data returned, and when is it deleted?
Cost varies with company size, scope, and the services you choose, so compare quotes against the same scope rather than the headline fee.
Frequently Asked Questions
How do I choose a payroll outsourcing provider in Turkey?
Define the scope, then ask for evidence behind every claim. Check how each bidder applied the Law No. 7566 changes in January 2026, score the finalists on weights agreed in advance, and close with a transition plan and contract terms covering errors and exit.
Who is responsible if an outsourced payroll filing in Turkey is late?
Your Turkish entity remains the employer, so SGK and the tax office hold it responsible. A late filing can also cost the two-point premium discount. Your contract with the provider decides whether you can recover those costs, which is why error and penalty clauses matter.
Can we switch payroll providers in the middle of the year in Turkey?
Yes, if the new provider starts from each employee’s correct year-to-date tax base. Income tax on wages is cumulative through the calendar year, so plan a parallel run of at least one full cycle and reconcile every difference before go-live.
Should a Turkey payroll provider have ISAE 3402 and ISO 27001?
For multinationals with internal audit requirements, they are strong signals. Check what the ISO 27001 certificate covers and ask for an ISAE 3402 Type 2 report, which tests controls over a period rather than at one date.
Can a Turkey payroll provider process data outside Turkey?
Only under the conditions in Article 9 of Law No. 6698, such as an adequacy decision or appropriate safeguards like a standard contract notified to the authority. Ask where the data is stored, which sub-processors are involved, and who handles the notification.
Key Takeaways
- Outsourcing moves the work, but your Turkish entity stays responsible to SGK and the tax office.
- Law No. 7566 gives you a ready test: ask each bidder to show how it applied the January 2026 changes.
- Request evidence for every claim and drop any provider that fails the knock-out questions on filing ownership, data terms, or exit.
- In a mid-year switch, the year-to-date tax base is what most often goes wrong. Verify it in a parallel run.
- Settle error, penalty, change-of-law, and exit terms before you sign.
Payroll Outsourcing in Turkey: What to Do Next
The CFO in our opening scenario does not need a longer list of providers. They need a shorter list backed by evidence, a scorecard the board can follow, and a transition plan that protects every employee’s payslip. With those three, the choice holds up when someone questions it a year later.
Datassist’s payroll outsourcing service runs Turkish payroll end to end: calculation, SGK declarations, tax filings, statutory reporting, and payslips. A named, English-speaking team handles your account, backed by ISO 27001 and ISAE 3402 and recognized twice by the Global Payroll Association as Best In-Country Payroll Provider of the Year. Bring your scope and we will show you the evidence behind each answer. Discuss payroll requirements with Datassist.
This article is for informational purposes only and does not constitute legal advice. For up-to-date Turkish regulations, consult official sources or contact a qualified advisor.
Related Reading
- Global Payroll RFP and SLA Checklist: Questions to Ask Before Signing – The RFP questions and SLA terms to settle when a payroll contract covers several countries.
- Payroll Outsourcing Services for Multinational Companies: Scope, Pricing, and SLAs – What a payroll outsourcing scope should include and how pricing and service levels work.
- Payroll Outsourcing in Turkey: In-House vs Outsourced Cost and Risk – How to compare running Turkish payroll internally with outsourcing it.
