Does the country publish candidate/party financing reports online?

Electoral Code of the Republic of Belarus [Amended as of June 4, 2015]

Article 68
Registration of Candidates for the Position of the President of the Republic of Belarus and for Deputies

The Central Commission, the district or territorial electoral commission, not later than on the forth day after registration of candidates for the position of the President of the Republic of Belarus or deputy, shall hand over to mass media for publication information on registration specifying the surname, name and patronymic name, the date of birth, the position (occupation), the place of work and residence and the party membership and information about income and property as defined by Central Commission of each candidate for the position of the President of the Republic of Belarus or deputy or shall otherwise inform the electors about this. When elections of the President of the Republic of Belarus are held, the Central Commission shall also submit to mass media data on the income and property of persons listed in part five of this Article for further publication.

Election funds data are available here.