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📖 Read the Full Rush Base Strategy Guide →

Rush Planner

Predictive progression modeling based on 2026 meta data. Calculates the mathematical advantage of strategic rushing using Gold Pass 2.0 builder boosts, Magic Item yield optimization, and double-book burst capacity analysis.

Clash of Clans Book of Building Calculator Icon
Rush Planner

Gold Pass 2.0 · Builder-Day Math · Magic Item Yield · Double-Book Burst

Inactive
Magic Items per Month
Max Potential Time Saved
76.0 Days
Per month by rushing to TH18
Time Wasted Maxing
44.0 Days
Lost potential per month staying at TH12
220.7d
GP Monthly Builder-Days
122.6%
Progression Yield Ratio
+300%
Item Value at Target TH
⚡

Double-Book Burst Capacity

Maximum immediate skip on TH18 entry (2 books + 1 hammer + 1 BoE)
48 Days
Instantly Skipped
2 Books
Burst Books
1 Hammer + 1 BoE
Additional Items
TH Level Avg. Upgrade Max Upgrade Primary Bottleneck Eff. Max (GP)
⚡ Each TH level higher = more value per Magic Item Higher TH = higher opportunity cost to stay
How the Math Works

The core mechanic of strategic rushing is the linear expansion of Magic Item yields. Because a Book of Building instantly completes any upgrade regardless of its duration, the absolute time saved scales directly with the upgrade length. A Book at TH10 saves ~4 days max; the same Book at TH18 saves ~16 days — a 300% increase in progress per item.

With Gold Pass 2.0's weighted 18.33% average builder boost, 6 active builders complete 220.7 builder-days per calendar month vs. 180.0 without — a 22.6% acceleration. Combined with selective Magic Item deployment on the longest TH18 upgrades, effective progression exceeds 300% of a standard F2P maxing account.

💡 Strategic Context: CWL matchmaking ignores war weight entirely — a rushed TH18 with TH12-level point defenses still brings the Revenge Tower, Super Wizard Tower, and max-capacity offensive armies. This calculator prioritizes the offensive rush path (Army Camps → Clan Castle → Laboratory → Hero Hall) and values heavy defenses (Scattershots, Monolith, Revenge Tower, Merged Defenses) while assigning near-zero progression value to point defenses. Read the full Strategy Guide.

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Strategic Rushing — Frequently Asked Questions

Expert answers on rush strategy, Magic Item efficiency, Gold Pass 2.0, and optimal progression paths in the 2026 meta.

How does Gold Pass 2.0 change the rushing math in 2026?
Gold Pass 2.0 unlocks builder and research boosts on a 10-day schedule: 10% on Day 1 → 15% on Day 4 → 20% on Day 8. This yields a weighted average boost of 18.33% over a 30-day season. With 6 builders, this translates to ~220.7 builder-days per month vs. 180.0 for F2P — a 22.6% progression acceleration. When you rush to TH18 and deploy books on 16-day upgrades instead of 4-day ones, the compounding effect pushes effective progression past 300% of a standard account.
What is the "Double-Book Burst" and how do I execute it?
The Double-Book Burst is the maximum immediate upgrade capacity upon entering a new Town Hall. With Gold Pass, keep 1 Book of Building in inventory and 1 unclaimed on the Gold Pass track. Combine with a Hammer of Building (from League Shop) and a Book of Everything. On entering TH18, you can instantly complete: Town Hall (via Hammer), Laboratory (Book 1), Clan Castle (Book 2 from track), Hero Hall (second Hammer after weekly reset), and Spell Factory (BoE) — bypassing up to ~70 days of bottlenecks in your first hour.
How many days of progression do I lose per month by staying at TH12?
Staying at TH12 instead of rushing to TH18 costs approximately 44+ days of free progression per month. Because Magic Items save time proportional to the upgrade duration at your current TH, a Book of Building at TH12 saves 8 days, while the same Book at TH18 saves ~16 days. Over a year, that's 528+ lost days of potential accelerated progression — over 17 months of calendar time thrown away.
What should I max before moving to the next Town Hall as a strategic rusher?
Priority order: 1) Laboratory (all key armies for your TH), 2) Army Camps, 3) Clan Castle, 4) Hero Hall and key Hero Equipment breakpoints, 5) At least 2 hero levels above TH minimum. Everything else — defenses, traps, walls — can be backfilled after reaching TH18. In CWL, your offensive weight (heroes, lab, equipment) matters far more than defensive weight since matchmaking is bracket-based.
How does the loot penalty affect rushed accounts in 2026?
The loot penalty for attacking 4+ TH levels below is 95%, but in the 2026 meta this is bypassed via high-league win bonus farming (e.g., Mass EQ + Valkyrie for fast 1-star/50% on higher TH bases). Additionally, TH18 has a hard league floor of Titan 2 — you can never be demoted below it, securing permanent high-level loot bonuses. The 2026 Loot System Overhaul also rewards attacking higher TH levels, directly benefiting rushers punching up.