Ward was born into an Irish Catholic family in Melbourne, Victoria. In 1863, financial hardship forced his family to move to New Zealand, where he completed his education. Ward established a successful grain trade in Invercargill in 1877 and soon became prominent in local politics. He became a Member of Parliament in 1887. Following the election of the Liberal Government in 1891, Ward was appointed as Postmaster-General under John Ballance; he was promoted to Minister of Finance in the succeeding ministry of Richard Seddon.