Tbilisi against Istanbul: rents 42% cheaper, salaries barely half, and that gap is the whole story

On Numbeo's comparison, last updated in the week to 25 September 2026, consumer prices in Istanbul run 18.3% above Tbilisi excluding rent and 24.3% above once rent is included. Rent alone is 42.1% higher in Istanbul. Restaurants are 14.4% dearer and groceries 8.6% dearer. These are crowd-sourced figures — 153 contributors for Tbilisi against 557 for Istanbul over the past year — so they describe a direction reliably and a decimal place much less so.

Average monthly net salary in the same dataset is about 1,713 lari in Tbilisi and about 3,231 lari in Istanbul, and local purchasing power is put 51.8% higher in Istanbul. So Tbilisi is cheaper in absolute terms and poorer in relative terms. That is the pivot for anyone comparing the two cities: a visitor or a remote worker spending foreign income gets more in Tbilisi, while a resident earning a local wage has less room than a resident of Istanbul does, even against lower prices.

A rent level is capped by what tenants earn, and Tbilisi's wage figure is the ceiling on the long-let market. That is one reason the gap between the two cities is wider on rent than on groceries: Istanbul's rents are carried by higher local incomes as well as by scale. For an owner in Tbilisi, the practical consequence is that raising a long-let rent much faster than local wages tends to produce vacancy rather than income, and that the tenants who can absorb a higher rent are usually the ones paid from abroad — a narrower pool, and one that moves with visa rules and remote-work fashion.

Crowd-sourced indices are useful for the shape of a decision and useless for the detail of one. They tell you that Tbilisi is the cheaper of the two cities to live in and the weaker of the two to earn in, which is enough to decide whether a comparison is worth pursuing. They do not tell you what a two-bedroom in Vake lets for this month, or what an Istanbul landlord actually collects after tax. Before money moves, the numbers that matter are local, current and specific to a building — not an index that changes when a few more people fill in a form.