diff --git a/src/main/kotlin/io/vincenzopalazzo/btcli4j/control/commands/btcprune/EstimateFeeBtc.kt b/src/main/kotlin/io/vincenzopalazzo/btcli4j/control/commands/btcprune/EstimateFeeBtc.kt
index 7b9467f..eb4a88d 100644
--- a/src/main/kotlin/io/vincenzopalazzo/btcli4j/control/commands/btcprune/EstimateFeeBtc.kt
+++ b/src/main/kotlin/io/vincenzopalazzo/btcli4j/control/commands/btcprune/EstimateFeeBtc.kt
@@ -30,6 +30,67 @@ import jrpc.clightning.plugins.CLightningPlugin
 import jrpc.clightning.plugins.log.PluginLog
 import jrpc.service.converters.jsonwrapper.CLightningJsonObject
 
+class EstimateFeeParams(val lnmode: String, val target: Int, val mode: String)
+
+class FeeManager {
+    private val feesEstimation: HashMap<String, EstimateFeeBitcoin> = HashMap()
+    private val params = listOf(
+        EstimateFeeParams("FEERATE_HIGHEST", 2, "CONSERVATIVE"),
+        EstimateFeeParams("FEERATE_URGENT", 6, "ECONOMICAL"),
+        EstimateFeeParams("FEERATE_NORMAL", 12, "ECONOMICAL"),
+        EstimateFeeParams("FEERATE_SLOW", 100, "ECONOMICAL")
+    )
+
+    private fun estimateFee(rpc: LiteBitcoinRPC, param: EstimateFeeParams): EstimateFeeBitcoin {
+        // TODO: try to use this transaction getmempoolinfo
+        // read this issue https://github.com/ElementsProject/lightning/issues/4473#issue-853325816
+        val params = Parameters("estimatesmartfee")
+        params.addParameter("conf_target", param.target)
+        params.addParameter("estimate_mode", param.mode)
+        return rpc.makeBitcoinRequest(params, EstimateFeeBitcoin::class.java)
+    }
+
+    fun estimate(rpc: LiteBitcoinRPC, plugin: CLightningPlugin): Boolean {
+        params.forEach {
+            val estimateFee = this.estimateFee(rpc, it)
+            if (estimateFee.errors?.isNotEmpty() == true) {
+                plugin.log(PluginLog.ERROR, "Error during the fee estimation")
+                for (error in estimateFee.errors!!) {
+                    plugin.log(PluginLog.ERROR, "EstimateFeeBtc: %s".format(error))
+                }
+                return false
+            }
+            estimateFee.convertBtcToSat()
+            plugin.log(
+                PluginLog.DEBUG,
+                "EstimateFeeBtc: Estimate fee (target: %d mode: %s) calculation from bitcoin core: %d".format(
+                    it.target,
+                    it.target,
+                    estimateFee.feeRate!!.toInt()
+                )
+            )
+            feesEstimation[it.lnmode] = estimateFee
+        }
+        return true
+    }
+
+    fun urgentFee(): EstimateFeeBitcoin {
+        return feesEstimation["FEERATE_URGENT"]!!
+    }
+
+    fun highestFee(): EstimateFeeBitcoin {
+        return feesEstimation["FEERATE_HIGHEST"]!!
+    }
+
+    fun normalFee(): EstimateFeeBitcoin {
+        return feesEstimation["FEERATE_NORMAL"]!!
+    }
+
+    fun slowFee(): EstimateFeeBitcoin {
+        return feesEstimation["FEERATE_SLOW"]!!
+    }
+}
+
 /**
  * @author https://github.com/vincenzopalazzo
  */
@@ -44,39 +105,26 @@ class EstimateFeeBtc(
             return
         }
         try {
-            // TODO: try to use this transaction getmempoolinfo
-            // read this issue https://github.com/ElementsProject/lightning/issues/4473#issue-853325816
-            val params = Parameters("estimatesmartfee")
-            params.addParameter("conf_target", 6)
-            // params.addParameter("estimate_mode", "CONSERVATIVE")
-
-            val estimateFee = bitcoinRPC.makeBitcoinRequest(params, EstimateFeeBitcoin::class.java)
-
-            if (estimateFee.errors?.isNotEmpty() == true) {
-                // TODO this can cause a loop? maybe
-                plugin.log(PluginLog.ERROR, "Error during the fee estimation")
-                for (error in estimateFee.errors!!) {
-                    plugin.log(PluginLog.ERROR, "EstimateFeeBtc: %s".format(error))
-                }
-                this.returnNullFeee(response)
+            val estimator = FeeManager()
+            if (!estimator.estimate(bitcoinRPC, plugin)) {
+                // FIXME this can cause a loop? maybe
+                this.returnNullFee(response)
                 return
             }
 
-            estimateFee.convertBtcToSat()
-            plugin.log(PluginLog.DEBUG, "EstimateFeeBtc: Estimate fee calculation from bitcoin core: %d".format(estimateFee.feeRate!!.toInt()))
             response.apply {
-                add("opening", estimateFee.feeRate!!.toInt())
-                add("mutual_close", estimateFee.feeRate!!.toInt())
-                add("unilateral_close", estimateFee.feeRate!!.toInt())
-                add("delayed_to_us", estimateFee.feeRate!!.toInt())
-                add("htlc_resolution", estimateFee.feeRate!!.toInt())
-                add("penalty", estimateFee.feeRate!!.toInt())
-                add("min_acceptable", estimateFee.feeRate!!.toInt() / 2)
-                add("max_acceptable", estimateFee.feeRate!!.toInt() * 10)
+                add("opening", estimator.normalFee().feeRate!!.toInt())
+                add("mutual_close", estimator.slowFee().feeRate!!.toInt())
+                add("unilateral_close", estimator.urgentFee().feeRate!!.toInt())
+                add("delayed_to_us", estimator.normalFee().feeRate!!.toInt())
+                add("htlc_resolution", estimator.urgentFee().feeRate!!.toInt())
+                add("penalty", estimator.normalFee().feeRate!!.toInt())
+                add("min_acceptable", estimator.slowFee().feeRate!!.toInt() / 2)
+                add("max_acceptable", estimator.highestFee().feeRate!!.toInt() * 10)
             }
         } catch (bitcoinEx: BitcoinCoreException) {
             plugin.log(PluginLog.ERROR, "EstimateFeeBtc: terminate bitcoin core with error: %s".format(bitcoinEx.message))
-            this.returnNullFeee(response)
+            this.returnNullFee(response)
         } catch (ex: LiteBitcoinRPCException) {
             plugin.log(PluginLog.ERROR, ex.stackTraceToString())
             plugin.log(PluginLog.DEBUG, "EstimateFeeBtc: Share message to esplora")
@@ -84,7 +132,7 @@ class EstimateFeeBtc(
         }
     }
 
-    private fun returnNullFeee(response: CLightningJsonObject) {
+    private fun returnNullFee(response: CLightningJsonObject) {
         response.apply {
             add("opening", null)
             add("mutual_close", null)