diff --git a/src/main/java/pro/cloudnode/smp/smpcore/Configuration.java b/src/main/java/pro/cloudnode/smp/smpcore/Configuration.java
index 71f4e9f..87f3d2e 100644
--- a/src/main/java/pro/cloudnode/smp/smpcore/Configuration.java
+++ b/src/main/java/pro/cloudnode/smp/smpcore/Configuration.java
@@ -42,7 +42,7 @@ public int joinRequestExpireMinutes() {
         return config.getInt("join.request-expire-minutes");
     }
 
-    public @NotNull Component relativeTime(final int t, final @NotNull ChronoUnit unit) {
+    public @NotNull Component relativeTime(final Number t, final @NotNull ChronoUnit unit) {
         final @NotNull String formatString = Objects.requireNonNull(config.getString("relative-time." + switch (unit) {
             case SECONDS -> "seconds";
             case MINUTES -> "minutes";
@@ -54,8 +54,10 @@ public int joinRequestExpireMinutes() {
                 throw new IllegalStateException("No relative time format for ChronoUnit " + unit);
             }
         }));
-        return MiniMessage.miniMessage()
-                .deserialize(formatString, Formatter.number("t", t), Formatter.choice("format", Math.abs(t)));
+        return MiniMessage.miniMessage().deserialize(formatString,
+                Formatter.number("t", t),
+                Formatter.choice("format", Math.abs(t.doubleValue()))
+        );
     }
 
     public @NotNull Component relativeTimeFuture(final @NotNull Component relativeTime) {
@@ -67,4 +69,18 @@ public int joinRequestExpireMinutes() {
         return MiniMessage.miniMessage()
                 .deserialize(Objects.requireNonNull(config.getString("relative-time.past")), Placeholder.component("t", relativeTime));
     }
+
+    public @NotNull Component relativeTimeDuration(final @NotNull Component duration) {
+        return MiniMessage.miniMessage()
+                .deserialize(
+                        Objects.requireNonNull(config.getString("relative-time.duration")),
+                        Placeholder.component("t", duration)
+                );
+    }
+
+    public @NotNull Component relativeTimeDurationIndefinite() {
+        return MiniMessage.miniMessage().deserialize(
+                Objects.requireNonNull(config.getString("relative-time.duration-indefinite"))
+        );
+    }
 }
diff --git a/src/main/java/pro/cloudnode/smp/smpcore/Messages.java b/src/main/java/pro/cloudnode/smp/smpcore/Messages.java
index 8931c13..57bc1a9 100644
--- a/src/main/java/pro/cloudnode/smp/smpcore/Messages.java
+++ b/src/main/java/pro/cloudnode/smp/smpcore/Messages.java
@@ -1,6 +1,7 @@
 package pro.cloudnode.smp.smpcore;
 
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.JoinConfiguration;
 import net.kyori.adventure.text.TextComponent;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.text.minimessage.tag.resolver.Formatter;
@@ -10,7 +11,9 @@
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.time.Duration;
 import java.time.ZoneOffset;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Calendar;
@@ -22,7 +25,7 @@
 import java.util.TimeZone;
 import java.util.stream.Collectors;
 
-public class Messages extends BaseConfig {
+public final class Messages extends BaseConfig {
 
     public Messages() {
         super("messages.yml");
@@ -37,26 +40,70 @@ public Messages() {
                 .deserialize(Objects.requireNonNull(config.getString("usage")), Placeholder.unparsed("label", label), Placeholder.unparsed("args", args));
     }
 
-    public @NotNull Component bannedPlayer(final @NotNull OfflinePlayer player) {
+    private @NotNull Component formatDuration(@Nullable Duration duration) {
+        if (duration == null) return SMPCore.config().relativeTimeDurationIndefinite();
+
+        final long seconds = Math.abs(duration.getSeconds());
+        final long days    = seconds / 86_400;
+        final long hours   = (seconds % 86_400) / 3_600;
+        final long minutes = (seconds % 3_600) / 60;
+        final long secs    = seconds % 60;
+
+        final ArrayList<Component> components = new ArrayList<>();
+
+        if (days    > 0) components.add(SMPCore.config().relativeTime(days, ChronoUnit.DAYS));
+        if (hours   > 0) components.add(SMPCore.config().relativeTime(hours, ChronoUnit.HOURS));
+        if (minutes > 0) components.add(SMPCore.config().relativeTime(minutes, ChronoUnit.MINUTES));
+        if (secs    > 0) components.add(SMPCore.config().relativeTime(secs, ChronoUnit.SECONDS));
+
+        final Component joined = Component.join(JoinConfiguration.spaces(), components);
+
+        return SMPCore.config().relativeTimeDuration(joined);
+    }
+
+    public @NotNull Component bannedPlayer(final @NotNull OfflinePlayer player, final @Nullable Duration duration) {
         return MiniMessage.miniMessage()
-                .deserialize(Objects.requireNonNull(config.getString("banned-player")), Placeholder.unparsed("player", Optional
-                        .ofNullable(player.getName()).orElse(player.getUniqueId().toString())));
+                .deserialize(
+                        Objects.requireNonNull(config.getString("banned-player")),
+                        Placeholder.unparsed("player",
+                                Optional.ofNullable(player.getName())
+                                        .orElse(player.getUniqueId().toString())
+                        ),
+                        Placeholder.component("duration", formatDuration(duration))
+                );
     }
 
-    public @NotNull Component bannedMember(final @NotNull Member member) {
+    public @NotNull Component bannedMember(final @NotNull Member member, final @Nullable Duration duration) {
         return MiniMessage.miniMessage()
-                .deserialize(Objects.requireNonNull(config.getString("banned-member")), Placeholder.unparsed("player", Optional
-                        .ofNullable(member.player().getName()).orElse(member.player().getUniqueId().toString())));
+                .deserialize(
+                        Objects.requireNonNull(config.getString("banned-member")),
+                        Placeholder.unparsed("player",
+                                Optional.ofNullable(member.player().getName())
+                                        .orElse(member.player().getUniqueId().toString())
+                        ),
+                        Placeholder.component("duration", formatDuration(duration))
+                );
     }
 
-    public @NotNull Component bannedMemberChain(final @NotNull Member member, final @NotNull List<@NotNull Member> alts) {
+    public @NotNull Component bannedMemberChain(
+            final @NotNull Member member,
+            final @NotNull List<@NotNull Member> alts,
+            final @Nullable Duration duration
+    ) {
         final @NotNull String altsString = alts.stream()
                 .map(m -> Optional.ofNullable(m.player().getName()).orElse(m.player().getUniqueId().toString()))
                 .collect(Collectors.joining(", "));
         return MiniMessage.miniMessage()
-                .deserialize(Objects.requireNonNull(config.getString("banned-member-chain")), Placeholder.unparsed("player", Optional
-                        .ofNullable(member.player().getName()).orElse(member.player().getUniqueId()
-                                .toString())), Placeholder.unparsed("n-alt", String.valueOf(alts.size())), Placeholder.unparsed("alts", altsString));
+                .deserialize(
+                        Objects.requireNonNull(config.getString("banned-member-chain")),
+                        Placeholder.unparsed("player",
+                                Optional.ofNullable(member.player().getName())
+                                        .orElse(member.player().getUniqueId().toString())
+                        ),
+                        Placeholder.unparsed("n-alt", String.valueOf(alts.size())),
+                        Placeholder.unparsed("alts", altsString),
+                        Placeholder.component("duration", formatDuration(duration))
+                );
     }
 
     public @NotNull Component unbannedPlayer(final @NotNull OfflinePlayer player) {
@@ -568,6 +615,17 @@ public Messages() {
         return MiniMessage.miniMessage().deserialize(Objects.requireNonNull(config.getString("error.demote-citizen")));
     }
 
+    public @NotNull Component errorDurationZeroOrLess() {
+        return MiniMessage.miniMessage().deserialize(Objects.requireNonNull(config.getString("error.duration-zero-or-less")));
+    }
+
+    public @NotNull Component invalidDuration(final @NotNull String duration) {
+        return MiniMessage.miniMessage().deserialize(
+                Objects.requireNonNull(config.getString("error.invalid-duration")),
+                Placeholder.unparsed("duration", duration)
+        );
+    }
+
     public record SubCommandArgument(@NotNull String name, boolean required) {
         public @NotNull Component component() {
             return required ? SMPCore.messages().subCommandArgumentRequired(name) : SMPCore.messages()
diff --git a/src/main/java/pro/cloudnode/smp/smpcore/SMPCore.java b/src/main/java/pro/cloudnode/smp/smpcore/SMPCore.java
index 3a4b2b4..57ad51c 100644
--- a/src/main/java/pro/cloudnode/smp/smpcore/SMPCore.java
+++ b/src/main/java/pro/cloudnode/smp/smpcore/SMPCore.java
@@ -188,7 +188,7 @@ public static boolean ifDisallowedCharacters(final @NotNull String source, final
         final double years = Math.floor(months / 12.0);
 
         final @NotNull Component t;
-        if (years > 0) t = SMPCore.config().relativeTime((int) years, ChronoUnit.YEARS);
+        if (years > 0) t = SMPCore.config().relativeTime(years, ChronoUnit.YEARS);
         else if (months > 0) t = SMPCore.config().relativeTime((int) months, ChronoUnit.MONTHS);
         else if (days > 0) t = SMPCore.config().relativeTime((int) days, ChronoUnit.DAYS);
         else if (hours > 0) t = SMPCore.config().relativeTime((int) hours, ChronoUnit.HOURS);
diff --git a/src/main/java/pro/cloudnode/smp/smpcore/command/BanCommand.java b/src/main/java/pro/cloudnode/smp/smpcore/command/BanCommand.java
index bcfbbf0..5f5cb83 100644
--- a/src/main/java/pro/cloudnode/smp/smpcore/command/BanCommand.java
+++ b/src/main/java/pro/cloudnode/smp/smpcore/command/BanCommand.java
@@ -10,6 +10,9 @@
 import pro.cloudnode.smp.smpcore.Permission;
 import pro.cloudnode.smp.smpcore.SMPCore;
 
+import java.time.Duration;
+import java.time.Instant;
+import java.time.format.DateTimeParseException;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.HashSet;
@@ -19,38 +22,54 @@
 
 public final class BanCommand extends Command {
     /**
-     * Usage: {@code /<command> <username> [reason]}
+     * Usage: {@code /<command> <username> [duration] [reason]}
      */
     @Override
     public boolean run(@NotNull CommandSender sender, @NotNull String label, @NotNull String @NotNull [] args) {
         if (!sender.hasPermission(Permission.BAN))
             return sendMessage(sender, SMPCore.messages().errorNoPermission());
-        if (args.length < 1) return sendMessage(sender, SMPCore.messages().usage(label, "<username> [reason]"));
-        final @NotNull OfflinePlayer target = SMPCore.getInstance().getServer().getOfflinePlayer(args[0]);
+        if (args.length < 1)
+            return sendMessage(sender, SMPCore.messages().usage(label, "<username> [duration] [reason]"));
+
+        final @Nullable String durationArg = args.length > 1 ? args[1] : null;
+        @Nullable Duration duration = null;
+        if (durationArg != null && durationArg.matches("(?i)^PT\\d.*")) try {
+            duration = Duration.parse(durationArg);
+        }
+        catch (DateTimeParseException ignored) {
+            return sendMessage(sender, SMPCore.messages().invalidDuration(durationArg));
+        }
 
-        final @Nullable String reason = args.length > 1 ? String.join(" ", Arrays.copyOfRange(args, 1, args.length)) : null;
-        final @Nullable Date banExpiry = null;
+        if (duration != null && (duration.isNegative() || duration.isZero()))
+            return sendMessage(sender, SMPCore.messages().errorDurationZeroOrLess());
+
+        final @Nullable Date banExpiry = duration == null ? null : Date.from(Instant.now().plus(duration));
+
+        final @Nullable String reason = args.length > 1
+                ? String.join(" ", Arrays.copyOfRange(args, duration == null ? 1 : 2, args.length))
+                : null;
         final @NotNull NamespacedKey banSource;
         if (sender instanceof final @NotNull Player player)
             banSource = new NamespacedKey(SMPCore.getInstance(), "player/" + player.getUniqueId());
         else banSource = new NamespacedKey(SMPCore.getInstance(), "console");
 
+        final @NotNull OfflinePlayer target = SMPCore.getInstance().getServer().getOfflinePlayer(args[0]);
         final @NotNull Optional<@NotNull Member> targetMember = Member.get(target);
         if (targetMember.isEmpty()) {
             SMPCore.runMain(() -> target.ban(reason, banExpiry, banSource.asString()));
-            return sendMessage(sender, SMPCore.messages().bannedPlayer(target));
+            return sendMessage(sender, SMPCore.messages().bannedPlayer(target, duration));
         }
         final @NotNull Member main = targetMember.get().altOwner().orElse(targetMember.get());
         final @NotNull HashSet<@NotNull Member> alts = main.getAlts();
 
         SMPCore.runMain(() -> main.player().ban(reason, banExpiry, banSource.asString()));
-        if (alts.isEmpty()) return sendMessage(sender, SMPCore.messages().bannedMember(main));
+        if (alts.isEmpty()) return sendMessage(sender, SMPCore.messages().bannedMember(main, duration));
         else {
             SMPCore.runMain(() -> {
                 for (final @NotNull Member alt : alts)
                     alt.player().ban(reason, banExpiry, banSource.asString());
             });
-            return sendMessage(sender, SMPCore.messages().bannedMemberChain(main, alts.stream().toList()));
+            return sendMessage(sender, SMPCore.messages().bannedMemberChain(main, alts.stream().toList(), duration));
         }
     }
 
diff --git a/src/main/resources/config.yml b/src/main/resources/config.yml
index f7dcbc6..ce6decf 100644
--- a/src/main/resources/config.yml
+++ b/src/main/resources/config.yml
@@ -23,3 +23,5 @@ relative-time:
   years: <t> <format:'0#years|1#year|1<years'>
   future: in <t>
   past: <t> ago
+  duration: for <t>
+  duration-indefinite: <u><b>forever</b></u>
diff --git a/src/main/resources/messages.yml b/src/main/resources/messages.yml
index aebfb22..ec047f3 100644
--- a/src/main/resources/messages.yml
+++ b/src/main/resources/messages.yml
@@ -1,9 +1,9 @@
 reloaded: <green>(!) Plugin successfully reloaded.</green>
 usage: "<yellow>(!) Usage: <white>/<label> <args></white></yellow>"
 
-banned-player: <yellow>(!) Banned singular non-member player <gray><player></gray>.</yellow>
-banned-member: <green>(!) Banned member <gray><player></gray>. No alts found.</green>
-banned-member-chain: "<green>(!) Banned member <gray><player></gray> and <gray><n-alt></gray> alts: <gray><alts></gray>.</green>"
+banned-player: <yellow>(!) Banned singular non-member player <gray><player></gray> <duration>.</yellow>
+banned-member: <green>(!) Banned member <gray><player></gray> <duration>. No alts found.</green>
+banned-member-chain: "<green>(!) Banned member <gray><player></gray> and <gray><n-alt></gray> alts <duration>: <gray><alts></gray>.</green>"
 
 unbanned-player: <yellow>(!) Unbanned singular non-member player <gray><player></gray>.</yellow>
 unbanned-member: <green>(!) Unbanned member <gray><player></gray> and <gray><n-alts></gray> alts.</green>
@@ -116,3 +116,5 @@ error:
   already-vice: <red>(!) The vice-leader is already <gray><player></gray>.</red>
   demote-leader: <red>(!) You cannot demote the nation leader.</red>
   demote-citizen: <red>(!) Don't make this <i>citizen</i> unworthy of the nation! (To remove from nation, use <click:suggest_command:/nation citizens kick ><gray>/nation citizens kick</gray></click>.)</red>
+  duration-zero-or-less: <red>(!) Duration must be greater than zero.</red>
+  invalid-duration: <red>(!) Invalid duration format <gray>‘<duration></gray>’.</red>