Mechanics Encyclopedia · Updated for 1.10
Victoria 3 Companies Guide: Prosperity Formula & Priorities
Companies are one of the few systems in Victoria 3 that hand you a genuinely exclusive advantage: unlock one, and beyond nominal ownership you get access to special buildings, scarce resources, and prestige bonuses that aren’t available any other way. Most guide sites currently cover this system in scattered fragments — this article tries to actually connect the prosperity formula to real in-game decisions, which is the gap this site is built to fill.
How a company gets unlocked
Unlocking is usually gated by two things at once: a relevant building reaching a certain level, and that industry’s Prosperity in your country crossing an activation threshold. Prosperity isn’t a one-time check — it’s a continuously fluctuating value that moves toward a target every week.
The prosperity formula
Three things determine your target Prosperity:
- Productivity weight — roughly 50 × your relative productivity (your industry’s efficiency compared to the world average)
- Employed building level weight — added directly based on total levels of buildings employed by the company
- Executive popularity weight — a score based on how popular the company’s management is
The actual Prosperity value moves toward that target every week at a rate that depends on scale: at 20+ employed levels, it climbs +1 per week; at 40+ levels, the rate flips to -0.2 per week (higher headcount raises the maintenance cost of staying prosperous, which is a deliberate anti-snowballing design). Around the 10-level mark, the rate interpolates to roughly +0.6 / -0.8.
| Employed levels | Weekly rate |
|---|---|
| ~10 | ≈ +0.6 to -0.8 (interpolated) |
| ≥ 20 | +1.0 |
| ≥ 40 | -0.2 |
Prosperity of 100 activates the company. Dropping below 75 deactivates it. These two thresholds are the most direct reference point for deciding whether it’s worth pushing for a specific company right now.
The throughput bonus, explained properly
Buildings owned by an established company get a throughput bonus: a +10% base, plus a separate bonus that scales with your country’s prestige ranking, capping at an additional +20% for the single highest-ranked great power — for a rank-1 country the combined total approaches +30%. Some sources simplify this into a flat “+20%” figure; the more accurate picture is two separate modifiers stacking, which is what the simulator above and this article both assume.
Which companies are actually worth chasing
The two questions that matter more than a company’s name recognition: does it unlock a building or resource that’s currently a bottleneck in your supply chain, and how far are you realistically from the Prosperity threshold it needs. Chasing a famous company that doesn’t fix an actual production bottleneck is a common low-efficiency play — the value of a company comes from what it unlocks for your specific economy, not its reputation.
A worked example
Take a mid-game economy with 25 employed building levels in the relevant industry, relative productivity sitting at 1.2, and executive popularity around 60. The target Prosperity comes out to roughly 50×1.2 + 25 + 60×0.1 = 60 + 25 + 6 = 91 — still short of the 100 activation line. Because employed levels are above the 20-level threshold, Prosperity climbs at +1 per week, meaning it takes on the order of nine weeks to reach 100 purely from the weekly increment, faster if productivity or executive popularity improve in the meantime. This is the kind of calculation the simulator above automates, but understanding the arithmetic helps you judge whether a company is a “few weeks away” opportunity or a “restructure your economy first” one.
Frequently asked questions
Can Prosperity go up and then fall back below the activation threshold? Yes — it’s a continuously moving target, not a one-time unlock. If your employed building levels shrink or executive popularity drops, Prosperity can slide back down, and if it falls below 75, the company deactivates.
Is it worth rushing a company early even if I don’t need its unlock yet? Usually not. Prosperity requirements scale with your economy, and rushing a company before you have the building levels to sustain it above 75 often means losing it again shortly after unlocking.
Does executive popularity matter as much as production numbers? It’s a smaller weight in the formula than productivity and employed levels, but it’s the easiest lever to move quickly if you need a short-term push toward the 100 threshold.
How company ownership interacts with law choice
Economic System law directly affects the investment pool efficiency that feeds into how quickly a company can climb toward the Prosperity thresholds discussed above — a more liberalized economic system generally makes it easier for private capital (including company-linked investment) to flow toward profitable ventures, while more centralized systems route that capital through government channels instead. This is one of the more concrete ways the law system and company system interact in practice, beyond the throughput bonuses discussed earlier.
Tracking prosperity trends, not just the current number
Because Prosperity moves toward a target rather than jumping to it, the current value only tells part of the story — the trend matters as much as the snapshot. A company sitting at 90 Prosperity with a target of 60 is heading toward deactivation even though 90 still looks healthy on paper, while a company at 70 with a target of 100 is actually improving. Checking the target alongside the current value, rather than the current value alone, avoids being caught off guard by a company that deactivates despite looking fine a few weeks earlier.
One practical habit worth building: check a company’s Prosperity trend right after any major law or building change, since both productivity and employed levels can shift quickly enough after a reform to move the target meaningfully within a few weeks.
Comparing prosperity trends across two or three candidate companies before committing scarce building slots to any single one is often more efficient than pursuing the first available option, especially early in a campaign when building capacity is still limited.
What to read next
The building-level mechanics behind company-owned throughput are covered in detail in the building system guide. If you’re weighing whether to prioritize a company unlock against a straightforward building upgrade, it’s worth reading that guide first — the two systems are designed to be evaluated together, not in isolation, since a company’s value is ultimately expressed through the buildings it ends up controlling.
🧮 Tool · Company Prosperity Simulator
Activates at 100, deactivates below 75. Rate tiers: +1/week at ≥20 employed levels, -0.2/week at ≥40, linearly interpolated in between.