隋代的(de)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)政(zheng)，據《隋書?食(shi)貨志》所(suo)(suo)載，是(shi)(shi)開(kai)皇三(san)(san)年(nian)正月以后，由北朝的(de)禁百姓采鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)，改鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)“與(yu)百姓共之”。鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)之利(li)“與(yu)百姓共之”，有三(san)(san)種(zhong)形式。一是(shi)(shi)征稅(shui)制(zhi)(zhi)。開(kai)放鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)、鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)采鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)權，讓(rang)百姓自由從事(shi)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)業生產(chan)，政(zheng)府從中(zhong)征稅(shui)，達到官(guan)(guan)府與(yu)百姓分(fen)利(li)的(de)目(mu)的(de)。二是(shi)(shi)官(guan)(guan)營制(zhi)(zhi)與(yu)無(wu)(wu)稅(shui)制(zhi)(zhi)并(bing)舉。對一些重要鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)、鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)仍然還(huan)是(shi)(shi)實行官(guan)(guan)營制(zhi)(zhi)；對其他鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)、鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)則(ze)實行無(wu)(wu)稅(shui)制(zhi)(zhi)，百姓生產(chan)所(suo)(suo)得全部歸自己所(suo)(suo)有。三(san)(san)是(shi)(shi)無(wu)(wu)稅(shui)制(zhi)(zhi)、征稅(shui)制(zhi)(zhi)和官(guan)(guan)營制(zhi)(zhi)并(bing)存。據《隋書?百官(guan)(guan)志》記載，隋代設有鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)監(jian)、丞，負(fu)責鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)的(de)管理(li)。唐代武德年(nian)間制(zhi)(zhi)定(ding)制(zhi)(zhi)度，鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)井(jing)(jing)設有鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)監(jian)鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)丞，但不(bu)知海鹽(yan)(yan)(yan)(yan)(yan)(yan)(yan)是(shi)(shi)不(bu)也(ye)是(shi)(shi)如此。
唐朝建立后，從各產(chan)鹽區(qu)的(de)(de)(de)實(shi)際出發，制(zhi)(zhi)定了相應的(de)(de)(de)鹽業政策。對(dui)前代(dai)(dai)制(zhi)(zhi)度有(you)(you)繼承(cheng)，也有(you)(you)創(chuang)新(xin)。征稅(shui)(shui)制(zhi)(zhi)、官(guan)營(ying)制(zhi)(zhi)、無稅(shui)(shui)制(zhi)(zhi)，隋代(dai)(dai)以前曾(ceng)經有(you)(you)過(guo)，唐王朝繼承(cheng)下來。以鹽代(dai)(dai)租制(zhi)(zhi)、租佃(dian)制(zhi)(zhi)，隋代(dai)(dai)以前未曾(ceng)有(you)(you)過(guo)，是唐代(dai)(dai)出現(xian)的(de)(de)(de)新(xin)制(zhi)(zhi)度。這些鹽制(zhi)(zhi)簡便易行(xing)，而且考慮到了社會的(de)(de)(de)承(cheng)受力，對(dui)唐前期社會經濟(ji)的(de)(de)(de)恢復和發展發揮(hui)了重要(yao)作用。對(dui)于池鹽、井鹽與海鹽，唐代(dai)(dai)都有(you)(you)一些特(te)別(bie)的(de)(de)(de)管(guan)理(li)辦法，制(zhi)(zhi)定了相關鹽法。鹽法也并非一成不變，在(zai)重要(yao)五一節上有(you)(you)時還出現(xian)過(guo)一些反復。對(dui)河東等地鹽池的(de)(de)(de)管(guan)理(li)，先實(shi)行(xing)的(de)(de)(de)是官(guan)營(ying)制(zhi)(zhi)，后又實(shi)行(xing)租佃(dian)制(zhi)(zhi)。
《新(xin)唐(tang)(tang)書?食貨(huo)志》記唐(tang)(tang)代鹽(yan)(yan)(yan)(yan)(yan)(yan)政說，蒲州(zhou)(zhou)安(an)邑、解縣有鹽(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)(chi)五處，總曰“兩(liang)池(chi)(chi)(chi)(chi)”，一年(nian)(nian)(nian)產鹽(yan)(yan)(yan)(yan)(yan)(yan)萬(wan)斛供應京師(shi)。鹽(yan)(yan)(yan)(yan)(yan)(yan)州(zhou)(zhou)五原有烏(wu)池(chi)(chi)(chi)(chi)、白池(chi)(chi)(chi)(chi)、瓦池(chi)(chi)(chi)(chi)、細項(xiang)池(chi)(chi)(chi)(chi)，靈(ling)州(zhou)(zhou)有溫泉池(chi)(chi)(chi)(chi)、兩(liang)井池(chi)(chi)(chi)(chi)、長尾池(chi)(chi)(chi)(chi)、五泉池(chi)(chi)(chi)(chi)、紅桃池(chi)(chi)(chi)(chi)、回樂池(chi)(chi)(chi)(chi)、弘靜(jing)池(chi)(chi)(chi)(chi)，會州(zhou)(zhou)有河(he)池(chi)(chi)(chi)(chi)，三州(zhou)(zhou)皆輸米以代鹽(yan)(yan)(yan)(yan)(yan)(yan)。開(kai)元(yuan)二十五年(nian)(nian)(nian)以前，對河(he)東鹽(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)(chi)實行(xing)的(de)(de)是官(guan)(guan)營(ying)(ying)制(zhi)。鹽(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)(chi)實行(xing)民屯式的(de)(de)官(guan)(guan)營(ying)(ying)制(zhi)，勞動者是附(fu)近(jin)的(de)(de)鹽(yan)(yan)(yan)(yan)(yan)(yan)丁。開(kai)元(yuan)二十五年(nian)(nian)(nian)以后，州(zhou)(zhou)司監(jian)將鹽(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)(chi)“分與有力(li)之(zhi)家營(ying)(ying)種(zhong)”，鹽(yan)(yan)(yan)(yan)(yan)(yan)畦(qi)有上、中(zhong)、下三等(deng)，對各等(deng)鹽(yan)(yan)(yan)(yan)(yan)(yan)畦(qi)所征收(shou)的(de)(de)鹽(yan)(yan)(yan)(yan)(yan)(yan)租(zu)(zu)數量(liang)不同，每年(nian)(nian)(nian)總共征收(shou)一萬(wan)石鹽(yan)(yan)(yan)(yan)(yan)(yan)租(zu)(zu)，這是租(zu)(zu)佃(dian)制(zhi)。鹽(yan)(yan)(yan)(yan)(yan)(yan)池(chi)(chi)(chi)(chi)仍然(ran)屬官(guan)(guan)府所有，“有力(li)之(zhi)家”只(zhi)有使(shi)用權，繳(jiao)納定額鹽(yan)(yan)(yan)(yan)(yan)(yan)租(zu)(zu)。
對鹽(yan)(yan)、靈、會三州(zhou)鹽(yan)(yan)池(chi)采(cai)取(qu)的政策，鹽(yan)(yan)州(zhou)烏池(chi)是“其(qi)鹽(yan)(yan)四分(fen)入官(guan)(guan)，一分(fen)入百姓”（張(zhang)守節《史(shi)記正義(yi)》）。這(zhe)(zhe)種分(fen)配方(fang)式也屬于(yu)民屯(tun)式的官(guan)(guan)營制，收入大部分(fen)歸了(le)官(guan)(guan)府。本來是要將(jiang)生產(chan)(chan)的鹽(yan)(yan)上交朝(chao)廷，由(you)于(yu)這(zhe)(zhe)三州(zhou)處于(yu)鄂爾(er)多(duo)斯米(mi)谷產(chan)(chan)地(di)，米(mi)質較好，朝(chao)廷為了(le)得到那里的米(mi)，規定(ding)三州(zhou)“皆輸米(mi)以代鹽(yan)(yan)”。大同、橫野二軍是邊防軍事機構(gou)，屬池(chi)鹽(yan)(yan)產(chan)(chan)地(di)，二軍鹽(yan)(yan)屯(tun)采(cai)取(qu)的是軍屯(tun)式的官(guan)(guan)營制。
至于井(jing)鹽(yan)(yan)，從《通(tong)典?食貨?鹽(yan)(yan)鐵》的所載(zai)看，唐代實(shi)行的征稅(shui)制。政府(fu)詳細規定了每口鹽(yan)(yan)井(jing)所應繳納(na)(na)(na)的稅(shui)額，逐月(yue)收(shou)取(qu)，并規定可(ke)以以銀(yin)代錢。確定白(bai)銀(yin)與銅(tong)錢的比(bi)價是：白(bai)銀(yin)一兩與銅(tong)錢二百文相當(dang)。鹽(yan)(yan)民交納(na)(na)(na)鹽(yan)(yan)稅(shui)時(shi)，納(na)(na)(na)銀(yin)或納(na)(na)(na)銅(tong)錢都(dou)可(ke)以。對(dui)于井鹽的管理，《太平(ping)寰宇記》卷85還有這(zhe)樣的記載：四(si)川境(jing)內劍南東道的陵井，開始采取征稅制，萬歲通天二年(nian)采取賣鹵水鹽(yan)民煮鹽(yan)的方(fang)(fang)式，出售鹵水的收入歸官府，這(zhe)種(zhong)經營方(fang)(fang)式的性質是官營制。長安二年(nian)（702），又恢復了征稅制。
對井鹽(yan)(yan)(yan)除實(shi)行(xing)征稅制外，對個(ge)別鹽(yan)(yan)(yan)井還曾實(shi)行(xing)官營制，與海(hai)(hai)鹽(yan)(yan)(yan)的(de)管理并不相同。幽州(zhou)屬東北部沿(yan)海(hai)(hai)地區，是海(hai)(hai)鹽(yan)(yan)(yan)產區。唐朝(chao)政(zheng)府在那里置為(wei)鹽(yan)(yan)(yan)屯(tun)(tun)(tun)，“每(mei)屯(tun)(tun)(tun)配(pei)丁五十人(ren)”，顯然是實(shi)行(xing)民屯(tun)(tun)(tun)式的(de)官營制。對沿(yan)海(hai)(hai)其他(ta)各(ge)州(zhou)的(de)基本政(zheng)策(ce)是“歲免租(zu)為(wei)鹽(yan)(yan)(yan)二萬斛以(yi)輸(shu)司(si)農”，即以(yi)鹽(yan)(yan)(yan)代替(ti)租(zu)庸調中(zhong)的(de)租(zu)。青、楚、海(hai)(hai)、滄、棣、杭(hang)、蘇(su)等州(zhou)將鹽(yan)(yan)(yan)換成輕貨，上交司(si)農寺(si)。以(yi)鹽(yan)(yan)(yan)代租(zu)的(de)制度前代沒有見過(guo)。