{"id":4257,"date":"2026-09-17T17:17:42","date_gmt":"2026-09-17T15:17:42","guid":{"rendered":"https:\/\/vtkkperinne.fi\/?page_id=4257"},"modified":"2026-09-17T17:17:43","modified_gmt":"2026-09-17T15:17:43","slug":"verohallinnon-tietojenkasittelykeskus-vht","status":"publish","type":"page","link":"https:\/\/vtkkperinne.fi\/?page_id=4257","title":{"rendered":"Verohallinnon tietojenk\u00e4sittelykeskus (VHT)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Verohallinnon tietojenk\u00e4sittelykeskus<\/strong> (VHT) oli erillinen, Verohallinnon oma tietotekniikkayksikk\u00f6, joka perustettiin <strong>1. huhtikuuta 1974<\/strong>. Sen teht\u00e4v\u00e4n\u00e4 oli vastata verotuksen tietoj\u00e4rjestelmien kehitt\u00e4misest\u00e4, laitehankinnoista ja piirihallinnon tietoteknisest\u00e4 tuesta. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VHT toimi tiiviiss\u00e4 yhteisty\u00f6ss\u00e4 Valtion tietokonekeskuksen (VTKK) kanssa, joka hoiti edelleen suuren osan verotuksen raskaista er\u00e4ajoista ja tuotantotoiminnasta. Keskuksen perustaminen oli t\u00e4rke\u00e4 askel Verohallinnon digitalisaation historiassa, ja se alkoi rakentaa Veron omia tietoliikenneyhteyksi\u00e4 ja levitt\u00e4\u00e4 tietotekniikkaa (kuten PDP-minikoneita) laajemmin alueellisiin verotoimistoihin. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Keskuksen historian keskeiset vaiheet tiivistetysti:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tausta (1968):<\/strong> Verohallinnon siihenastiset omat tietokonekeskukset oli siirretty osaksi Valtion tietokonekeskusta VTKK. Pian kuitenkin huomattiin, ett\u00e4 monimutkainen verotustoiminta vaatii viraston omaa, erikoistunutta IT-suunnittelua ja -henkil\u00f6st\u00f6\u00e4. <\/li>\n\n\n\n<li><strong>Perustaminen (1974):<\/strong> Tarpeeseen vastattiin perustamalla VHT kev\u00e4\u00e4ll\u00e4 1974, jolloin yksikk\u00f6 sai oman budjetin ja alkoi palkata omaa IT-asiantuntijakuntaansa. <\/li>\n\n\n\n<li><strong>Toimintavuodet ja kehitys (1974\u20131984):<\/strong> T\u00e4n\u00e4 aikakautena otettiin k\u00e4ytt\u00f6\u00f6n muun muassa ensimm\u00e4iset tietoliikenneyhteydet (IBM 3780 -er\u00e4p\u00e4\u00e4tteet Otaniemess\u00e4 sijainneeseen VTKK:n keskuskoneeseen) ja luotiin perusta sille hajautetulle tietoj\u00e4rjestelm\u00e4lle, johon moderni verotus Suomessa edelleen nojaa.<\/li>\n\n\n\n<li><\/li>\n\n\n\n<li><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Verohallinnon tietojenk\u00e4sittelykeskus (VHT) oli erillinen, Verohallinnon oma tietotekniikkayksikk\u00f6, joka perustettiin 1. huhtikuuta 1974. Sen teht\u00e4v\u00e4n\u00e4 oli vastata verotuksen tietoj\u00e4rjestelmien kehitt\u00e4misest\u00e4, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-4257","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/4257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4257"}],"version-history":[{"count":2,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/4257\/revisions"}],"predecessor-version":[{"id":4259,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/4257\/revisions\/4259"}],"wp:attachment":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}