diff --git a/base/build.sbt b/base/build.sbt
index 846d275f..7436b61a 100644
--- a/base/build.sbt
+++ b/base/build.sbt
@@ -5,4 +5,5 @@ libraryDependencies += Dependencies.config
 libraryDependencies += scalaXML
 libraryDependencies += scalaParserCombinators
 libraryDependencies += scalatest % "test"
+libraryDependencies += scalamock % "test"
 
diff --git a/base/src/main/scala/co/uproot/abandon/Ast.scala b/base/src/main/scala/co/uproot/abandon/Ast.scala
index 24104f92..a7ae186c 100644
--- a/base/src/main/scala/co/uproot/abandon/Ast.scala
+++ b/base/src/main/scala/co/uproot/abandon/Ast.scala
@@ -219,4 +219,4 @@ case class Scope(entries: Seq[ASTEntry], parentOpt: Option[Scope]) extends ASTEn
   def childScopes = Helper.filterByType[Scope](entries)
 
   def allTransactions:Seq[ScopedTxn] = allLocalTransactions ++ childScopes.flatMap(_.allTransactions)
-}
\ No newline at end of file
+}
diff --git a/base/src/main/scala/co/uproot/abandon/Config.scala b/base/src/main/scala/co/uproot/abandon/Config.scala
index 32a013e6..4bc7cc3d 100644
--- a/base/src/main/scala/co/uproot/abandon/Config.scala
+++ b/base/src/main/scala/co/uproot/abandon/Config.scala
@@ -1,12 +1,16 @@
 package co.uproot.abandon
 
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
 import com.typesafe.config.Config
 import com.typesafe.config.ConfigFactory
+
 import collection.JavaConverters._
-import com.typesafe.config.ConfigObject
 import org.rogach.scallop.ScallopConf
 import SettingsHelper._
 import com.typesafe.config.ConfigException
+import scala.util.Try
 
 class AbandonCLIConf(arguments: Seq[String]) extends ScallopConf(arguments) {
   val inputs = opt[List[String]]("input", short = 'i')
@@ -69,16 +73,17 @@ object SettingsHelper {
     if (file.exists) {
       try {
         val config = ConfigFactory.parseFile(file).resolve()
-        val inputs = config.getStringList("inputs").asScala.map(handleInput(_, configFileName)).flatten.toSeq.sorted
+        val inputs = config.getStringList("inputs").asScala.flatMap(handleInput(_, configFileName)).toSeq.sorted
         val reports = config.getConfigList("reports").asScala.map(makeReportSettings(_))
         val reportOptions = config.optConfig("reportOptions")
-        val isRight = reportOptions.map(_.optStringList("isRight")).flatten.getOrElse(Nil)
+        val isRight = reportOptions.flatMap(_.optStringList("isRight")).getOrElse(Nil)
         val exportConfigs = config.optConfigList("exports").getOrElse(Nil)
         val exports = exportConfigs.map(makeExportSettings)
         val accountConfigs = config.optConfigList("accounts").getOrElse(Nil)
         val accounts = accountConfigs.map(makeAccountSettings)
         val eodConstraints = config.optConfigList("eodConstraints").getOrElse(Nil).map(makeEodConstraints(_))
-        Right(Settings(inputs, eodConstraints, accounts, reports, ReportOptions(isRight), exports, Some(file)))
+        val dateConstraints = config.optConfigList("dateConstraints").getOrElse(Nil).map(makeDateConstraints(_))
+        Right(Settings(inputs, eodConstraints ++ dateConstraints, accounts, reports, ReportOptions(isRight), exports, Some(file)))
       } catch {
         case e: ConfigException => Left(e.getMessage)
       }
@@ -96,6 +101,13 @@ object SettingsHelper {
     }
   }
 
+  def makeDateConstraints(config: Config): DateConstraint = {
+    val from = AbandonParser.dateExpr(ParserHelper.scanner(config.getString("from"))).map(Some(_)).getOrElse(None)
+    val to   = AbandonParser.dateExpr(ParserHelper.scanner(config.getString("to"))).map(Some(_)).getOrElse(None)
+
+    DateConstraint(from, to)
+  }
+
   def makeReportSettings(config: Config) = {
     val title = config.getString("title")
     val reportType = config.getString("type")
@@ -204,9 +216,27 @@ case class NegativeConstraint(val accName: String) extends Constraint with SignC
   val signStr = "negative"
 }
 
+case class DateConstraint(dateFrom: Option[Date], dateTo: Option[Date]) extends Constraint {
+  override def check(appState: AppState): Boolean = {
+    appState.accState.posts.find(post => {
+      val date = post.date
+
+      dateFrom.map(DateOrdering.compare(_, date) > 0).getOrElse(false) || dateTo.map(DateOrdering.compare(_, date) < 0).getOrElse(false)
+    }).foreach(post => {
+      throw new ConstraintError(
+        s"${post.name} is not in date range of " +
+        s"[${dateFrom.getOrElse("None")}, ${dateTo.getOrElse("None")}]. " +
+        s"Date is ${post.date.formatISO8601Ext}"
+      )
+    })
+
+    true
+  }
+}
+
 case class Settings(
   inputs: Seq[String],
-  eodConstraints: Seq[Constraint],
+  constraints: Seq[Constraint],
   accounts: Seq[AccountSettings],
   reports: Seq[ReportSettings],
   reportOptions: ReportOptions,
diff --git a/base/src/main/scala/co/uproot/abandon/Parser.scala b/base/src/main/scala/co/uproot/abandon/Parser.scala
index 9a2b7750..ce45d7e4 100644
--- a/base/src/main/scala/co/uproot/abandon/Parser.scala
+++ b/base/src/main/scala/co/uproot/abandon/Parser.scala
@@ -211,12 +211,12 @@ object AbandonParser extends StandardTokenParsers with PackratParsers {
   private lazy val conditionExpr = (numericExpr ~ comparisonExpr ~ numericExpr) ^^ { case (e1 ~ op ~ e2) => ConditionExpr(e1, op, e2)}
   private lazy val comparisonExpr: PackratParser[String] = ((">" | "<" | "=") ~ "=" ^^ {case (o1 ~ o2) => o1 + o2}) | ">" | "<" 
 
-  private lazy val compactTxFrag = (("." ~> (dateFrag | isoDateFrag) ~ accountName ~ numericExpr ~ eolComment) ^^ {
+  private lazy val compactTxFrag = (("." ~> dateExpr ~ accountName ~ numericExpr ~ eolComment) ^^ {
     case date ~ accountName ~ amount ~ optComment =>
       Transaction(date, List(Post(accountName, Option(amount), optComment)), None, None, Nil)
   })
 
-  private lazy val txFrag = (((dateFrag | isoDateFrag) ~ (annotation?) ~ (payee?)) <~ eol) ~ (eolComment*) ~ (post+) ^^ {
+  private lazy val txFrag = ((dateExpr ~ (annotation?) ~ (payee?)) <~ eol) ~ (eolComment*) ~ (post+) ^^ {
     case date ~ annotationOpt ~ optPayee ~ optComment ~ posts =>
       val annotationStrOpt = annotationOpt.map(_.mkString(""))
       Transaction(date, posts, annotationStrOpt, optPayee, optComment.flatten)
@@ -230,6 +230,8 @@ object AbandonParser extends StandardTokenParsers with PackratParsers {
     case name ~ amount ~ commentOpt => Post(name, amount, commentOpt)
   }
 
+  lazy val dateExpr = dateFrag | isoDateFrag
+
   lazy val isoDateFrag = ((((integer <~ "-") ~ integer) <~ "-") ~ integer) ^? ({
     case y ~ m ~ d if (isValidDate(y, m, d)) =>
       Date(y, m, d)
diff --git a/base/src/test/scala/co/uproot/abandon/DateConstraintTest.scala b/base/src/test/scala/co/uproot/abandon/DateConstraintTest.scala
new file mode 100644
index 00000000..6aa377e6
--- /dev/null
+++ b/base/src/test/scala/co/uproot/abandon/DateConstraintTest.scala
@@ -0,0 +1,67 @@
+package co.uproot.abandon
+
+import java.time.{LocalDate, Month}
+
+import org.scalamock.scalatest.MockFactory
+import org.scalatest._
+
+class DateConstraintTest extends FlatSpec with Matchers with BeforeAndAfterEach with MockFactory with OneInstancePerTest {
+
+  class MockableDetailedPost extends DetailedPost(new AccountName(Seq()), 0, None, None)
+
+  var appState: AppState = null
+
+  override def beforeEach() {
+    setupMocks()
+  }
+
+  it should "return true on valid posts" in {
+    val constraint = new DateConstraint(
+      Some(Date(2013, 1, 1)),
+      Some(Date(2013, 12, 31))
+    )
+
+    constraint.check(appState) should be(true)
+  }
+
+  it should "throw exception on end date violation" in {
+    val constraint = new DateConstraint(
+      Some(Date(2013, 1, 1)),
+      Some(Date(2013, 11, 1))
+    )
+    an [ConstraintError] should be thrownBy constraint.check(appState)
+
+    val constraintWithoutFrom = new DateConstraint(None, Some(Date(2013, 11, 1)))
+    an [ConstraintError] should be thrownBy constraintWithoutFrom.check(appState)
+  }
+
+  it should "throw exception on start date violation" in {
+    val constraint = new DateConstraint(
+      Some(Date(2013, 6, 1)),
+      Some(Date(2013, 11, 1))
+    )
+    an [ConstraintError] should be thrownBy constraint.check(appState)
+
+    val constraintWithoutTo = new DateConstraint(Some(Date(2013, 11, 1)), None)
+    an [ConstraintError] should be thrownBy constraintWithoutTo.check(appState)
+  }
+
+  it should "return true on empty dates" in {
+    val constraintWithoutTo = new DateConstraint(None, None)
+    constraintWithoutTo.check(appState) should be(true)
+  }
+
+
+  def setupMocks() {
+    val accState = stub[AccountState]
+    appState = new AppState(accState)
+
+    val posts: Seq[DetailedPost] = (1 to 12).map(month => {
+      val post = stub[MockableDetailedPost]
+      (post.date _).when().returns(new Date(2013, month, 1))
+      post
+    })
+
+    (accState.posts _).when().returns(posts)
+  }
+}
diff --git a/cli/src/main/scala/co/uproot/abandon/App.scala b/cli/src/main/scala/co/uproot/abandon/App.scala
index a5b3c3da..26e21839 100644
--- a/cli/src/main/scala/co/uproot/abandon/App.scala
+++ b/cli/src/main/scala/co/uproot/abandon/App.scala
@@ -151,7 +151,7 @@ object CLIMain  {
         val (parseError, astEntries, processedFiles) = Processor.parseAll(settings.inputs)
         if (!parseError) {
           val appState = Processor.process(astEntries,settings.accounts)
-          Processor.checkConstaints(appState, settings.eodConstraints)
+          Processor.checkConstaints(appState, settings.constraints)
           settings.exports.foreach { exportSettings =>
             val reportWriter = new ReportWriter(settings, exportSettings.outFiles)
             println()
diff --git a/examples/README.md b/examples/README.md
index 922d3358..fd79425d 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -3,4 +3,4 @@ There are two examples in this directory.
 If you are new to `abandon` then have a look at the `simple` example first.
 
 The `complete` example showcases many features of abandon, and can be used as a reference
-for managing your acutal accounts.
+for managing your actual accounts.
diff --git a/examples/complete/accounts.conf b/examples/complete/accounts.conf
index 75a0f5f2..0c111526 100644
--- a/examples/complete/accounts.conf
+++ b/examples/complete/accounts.conf
@@ -67,3 +67,8 @@ exports += {
   }]
 
 }
+
+dateConstraints += {
+  from = "2012-01-01"
+  to   = "2013-12-31"
+}
\ No newline at end of file
diff --git a/examples/simple/accounts.conf b/examples/simple/accounts.conf
index 186e1315..69d3b3e0 100644
--- a/examples/simple/accounts.conf
+++ b/examples/simple/accounts.conf
@@ -16,4 +16,3 @@ reports += {
   type = balance
   accountMatch = ["^Income.*", "^Expenses.*"]
 }
-
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 653baca7..ce4fe4f4 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -3,8 +3,9 @@ import Keys._
 
 object Dependencies {
   // Versions
-  val scalatestVersion = "3.0.0"
+  val scalatestVersion = "2.2.6"
   val scallopVersion = "2.0.2"
+  val scalaMockVersion = "3.2.2"
   val configVersion = "1.3.0"
   val scalaXMLVersion = "1.0.5"
   val scalaParserCombinatorsVersion = "1.0.4"
@@ -12,6 +13,7 @@ object Dependencies {
 
   // Libraries
   val scalatest = "org.scalatest" %% "scalatest" % scalatestVersion
+  val scalamock = "org.scalamock" %% "scalamock-scalatest-support" % scalaMockVersion
   val scallop = "org.rogach" %% "scallop" % scallopVersion
   val config = "com.typesafe" % "config" % configVersion
   val scalaXML = "org.scala-lang.modules" %% "scala-xml" % scalaXMLVersion