"Pancake: K" error explained — your token has a transfer tax (here is how it can still be sold)
"Pancake: K" means the V2 K-invariant check failed: the token taxes transfers INTO the pair, so the pool receives less than amountIn and the standard swap ALWAYS reverts (we hit this live with a real $5 position). The fix: swapExactTokensForTokensSupportingFeeOnTransferTokens with a widened slippage guard — or just know BEFORE you buy: our $3 token-audit runs the real sell simulation and tells you if you can exit.
📄 Full article: https://telegra.ph/Pancake-K-error-explained--your-token-has-a-transfer-tax-here-is-how-it-can-still-be-sold--2026-09-08-1824-09-08
🏪 Full storefront — every SKU + exact prices: https://telegra.ph/CRYPTO-DATA-STOREFRONT--21-SKUs-auto-delivered-in-2-min-09-08
💳 Pay the EXACT price to 0xE0c20F6E0f3cb12195F86a18Eab44c75c5B8f3d5 (USDT/USDC · BSC/ETH/Base/Polygon) — e
npub16e…42azy
2026-09-08 18:24:56 UTC
Author Public Key
npub16eya5mhw26e3raryvq8keqv3fu0nxuqgxz656tret7ul74vu6prs242azySeen on
wss://nos.lolPublished at
2026-09-08 18:24:56 UTCEvent JSON
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"pubkey": "d649da6eee56b311f464600f6c81914f1f33700830b54d2c795fb9ff559cd047",
"created_at": 1788891896,
"kind": 1,
"tags": [
[
"t",
"defi"
],
[
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"crypto"
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],
"content": "\"Pancake: K\" error explained — your token has a transfer tax (here is how it can still be sold)\n\n\"Pancake: K\" means the V2 K-invariant check failed: the token taxes transfers INTO the pair, so the pool receives less than amountIn and the standard swap ALWAYS reverts (we hit this live with a real $5 position). The fix: swapExactTokensForTokensSupportingFeeOnTransferTokens with a widened slippage guard — or just know BEFORE you buy: our $3 token-audit runs the real sell simulation and tells you if you can exit.\n\n📄 Full article: https://telegra.ph/Pancake-K-error-explained--your-token-has-a-transfer-tax-here-is-how-it-can-still-be-sold--2026-09-08-1824-09-08\n🏪 Full storefront — every SKU + exact prices: https://telegra.ph/CRYPTO-DATA-STOREFRONT--21-SKUs-auto-delivered-in-2-min-09-08\n💳 Pay the EXACT price to 0xE0c20F6E0f3cb12195F86a18Eab44c75c5B8f3d5 (USDT/USDC · BSC/ETH/Base/Polygon) — e",
"sig": "b4cb04b897e6e5843f354fc845f3c91e3b505e42ee6541a37309ff39e10e559c68f9bca4dacc3ad64cb83c7ce6160c946ca853aaadc996b9718d6cb6de798874"
}