Mikrotik wireguard client as default gateway

mikrotik-wireguard-default-gw.sh

# You should change "XX.XX.XX.XX" to you wireguard server
# and set public-key,private-key,preshared-key,"YY.YY.YY.YY/YY" according to your config
/interface/wireguard/add name=wg0 private-key="[PRIVATE_KEY_HERE]"

/interface/wireguard/peers/add interface=wg0 endpoint-address=XX.XX.XX.XX endpoint-port=12321 public-key="[PUBLIC_KEY_HERE]" preshared-key="[PRESHARED_KEY_HERE]" persistent-keepalive=25s allowed-address=0.0.0.0/0

/ip/address/add interface=wg0 address=YY.YY.YY.YY/YY

/ip/route/add dst-address=XX.XX.XX.XX comment=wgserver disabled=yes

/ip/route/add dst-address=0.0.0.0/0 gateway=wg0

/ip/dhcp-client/add add-default-route=no interface=ether1 script=":local route [/ip route find comment=\"wgserver\"]\r\
    \n:if (\$bound=1) do={\r\
    \n  /ip route set \$route gateway=\$\"gateway-address\" disabled=no\r\
    \n} else={\r\
    \n  /ip route set \$route disabled=yes\r\
    \n}" use-peer-dns=no use-peer-ntp=no

/interface/list/member/add interface=wg0 list=WAN

/ip/dns/set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4

Change the parameters according to your settings and your mikrotik will send all traffic through wireguard.