TFT economy explained: interest, streaks and when to spend

In Teamfight Tactics, gold is not a resource like any other: it makes more of itself. A coin held for one more round pays you, a coin spent never pays again. That single sentence holds the tension of the whole game, and it is what separates a lobby played on feel from a lobby played with a plan. Here is how interest works, what streaks are actually worth, and the only moments when breaking your bank is the right call.

Interest: one breakpoint every ten gold

At the end of every round the game pays a base income that is the same for everyone, then adds interest calculated on what you were holding. The rule fits on one line: one gold of interest per ten gold saved, rounded down, up to a cap. Riot adjusts the thresholds from set to set, but the shape never changes. Returns climb in steps, never smoothly.

• Between two breakpoints, idle gold earns nothing extra. Nineteen gold pays exactly the same interest as ten: the nine on top are doing no work.
• The practical consequence is one sentence long: spend above a breakpoint, never just below it. Dropping from thirty to twenty-eight for a reroll costs far more than the two gold on the button.
• The cap changes everything in the mid game. Once you reach it, every additional coin produces nothing and has no reason left to sit in your pocket.
• Base income, interest and streak bonuses are three independent sources that stack. A well played game often collects all three in the same round.

Win streaks and loss streaks: two ways to make gold

The game pays a bonus for consistency in both directions. Stringing wins together pays, stringing losses together pays too, and the amount grows with the length of the run. The exact thresholds move between sets, so memorising them matters less than understanding what they imply.

What the bonus punishes is flip-flopping. Winning every other round is the most expensive place to be in the game: you bleed health like a player who is losing, and you collect the income of a player doing nothing special. Between the two lines, committing beats drifting every time.

• Win streaking: you take little damage and earn more. It is the comfortable line, but it pushes you to spend to keep pace, and the bank melts without you noticing.
• Deliberate loss streaking: you accept the health loss in exchange for gold. It only makes sense if you know which round you intend to stabilise on, and your health can survive until then.
• Flip-flopping: the worst of both. When your board is halfway between two plans, commit instead of waiting for the lobby to decide for you.
• A streak can also break by accident. One unit bought without thinking can win you a round you meant to lose, and take the next few bonuses with it.

When to break your bank

A bank is not a score. It only exists to fund one specific moment, and a player who finishes eighth holding fifty gold played their economy badly, not well. Three situations justify spending hard.

1. 1Your health will not survive three more rounds. The question is no longer returns, it is survival: levelling and filling out the board are worth more than any interest.
2. 2You have hit the interest cap. Every coin above it produces nothing, so it is gold waiting for a reason, and levelling is almost always that reason.
3. 3Your composition is one step away from working. One unit, one level, one trait breakpoint: paying to cross it now beats saving to cross the same step two rounds later.

The spend that almost never justifies itself is the impatient early reroll, when nothing is urgent and the shop has no reason yet to offer what you are looking for.

What a level lead is worth

Buying experience and rerolling the shop both buy the same thing, better units, but they do not share a horizon. A level permanently improves your shop odds and adds a board slot; a reroll only touches the shop in front of you right now.

Being one level ahead of the lobby means seeing units arrive that nobody else can buy yet, and hitting trait breakpoints first. That lead is paid in gold and refunded in health kept. It is also hard to claw back: a player one level behind is rolling in a poorer shop while spending just as much.

On Mac: counting gold without looking away from the board

One piece of context before the hardware. Teamfight Tactics no longer supports macOS as of patch 18.1, the patch that opened Set 18 by moving the game onto Unreal Engine: no desktop client, no fixes, no support. Riot calls the removal temporary and says it is working to support the system in a future update, with no date announced. No account is affected, and Android remains fully supported, which is the version OSFT Launcher runs on an Apple Silicon Mac. The full story is in our article on macOS support being removed in patch 18.1.

Economy is the part of the game that suffers most from a cramped interface, because it asks you to read three things at once: your gold, the shop and the board. On six inches every purchase forces you to look away from the rest, and a planning phase often ends on a half-made decision. On a laptop screen all three sit in the same field of view, and buys and rerolls run on keys instead of taps: our keyboard guide for TFT on Mac covers the default bindings and the editor that lets you change them.

Five economy mistakes that cost placements

1. 1Rerolling just below a breakpoint. Two gold on the button, and an interest step lost for several rounds if you never climb back.
2. 2Holding a bank with no plan. Fifty gold at the deciding round is worth nothing if the board never caught up.
3. 3Levelling out of habit every round, without checking whether that level actually opens anything.
4. 4Letting a streak break on a reflex purchase, and giving up the next few bonuses for a unit that will not stay.
5. 5Counting on the carousel to fix an economy deficit. It hands you a component, never gold.

These habits sit on top of the fundamentals: if trait breakpoints, positioning and shop reading are not second nature yet, start with our guide to getting started in Teamfight Tactics. And for the round that hands out half your items without costing a coin, see our piece on the carousel.