Thomas Dekker was born around 1572, there is no certainty as to date and it is only probable that he was born in London.   Little is known of his early years.  From such an unknown start he was however to make quite a name for himself. 

By the mid 1590s Dekker had set forth on a career as a playwright.  Samples of his work (though not the actual date) can be found in the manuscript of Sir Thomas More. Of more certainty is work as a playwright for the Admiral's Men of Philip Henslowe, in whose records of account he is first mentioned in early 1598.

While there are plays connected with his name performed as early as 1594, it is not clear that he was the original author or part of a team involved in revising and updating.   Much of his work has been lost and whilst his prolific output argues against any uniform quality there are undoubted gems both as a solo writer and as part of various collaborations.  Indeed between 1598 and 1602, about forty plays for Henslowe, usually in collaboration, can be attributed to him.

Dekker’s name first appears in Henslowe’s diary* in connection with "fayeton" (presumably, Phaeton) in 1598. There follow, before 1599, payments for work on The Triplicity of Cuckolds, The Mad Man's Morris, and Hannibal and Hermes. He worked on these plays with Robert Wilson, Henry Chettle, and Michael Drayton. With Drayton, he also worked on history plays on the French civil wars, Earl Godwin, and others.

It is also recorded at this time that Dekker’s long association with financial mishaps was going to be a life-long concern. He was imprisoned for a short time for debt in Poultry Compter, a small prison run by the Sherriff of London.  It was used to house prisoners such as vagrants, debtors and religious dissenters, as well as criminals convicted of misdemeanours including homosexuality, prostitution and drunkenness.

In 1599, he wrote plays on Troilus and Cressida, Agamemnon (with Chettle), and Page of Plymouth. In that year, also, he collaborated with Chettle, Jonson, and Marston on a play about Robert II.

1599 also saw the production of three plays that have survived including his most famous work, The Shoemaker's Holiday, or the Gentle Craft. This play reflects the daily lives of ordinary Londoners, and contains the poem The Merry Month of May. The play reflects the trend for the intermingling of everyday subjects with the fantastical, embodied here by the rise of a craftsman to Mayor and the involvement of an unnamed but idealised king in the concluding banquet. Old Fortunatus and Patient Grissel are the two other surviving plays.

In 1600, he worked on The Seven Wise Masters, Fortune's Tennis, Cupid and Psyche, and Fair Constance of Rome. The next year, in addition to the classic Satiromastix, he worked on a play possibly about Sebastian of Portugal and Blurt, Master Constable, on which he may have collaborated with Thomas Middleton.

To these years also belong the collaborations with Ben Jonson and John Marston, which presumably contributed to the War of the Theatres in 1600 and 1601.  To Jonson, Dekker was a hack, a "dresser of plays about town"; Jonson made fun of Dekker as Demetrius Fannius in Poetaster and as Anaides in Cynthia's Revels.

Dekker's riposte, Satiromastix, performed both by the Lord Chamberlain's Men and the child actors of Paul's, casts Jonson as an affected, hypocritical Horace and marks the end of the "poetomachia".

In 1602 he revised two older plays, Pontius Pilate (1597) and the second part of Sir John Oldcastle. He also collaborated on Caesar's Fall, Jephthah, A Medicine for a Curst Wife, Sir Thomas Wyatt (on Wyatt's rebellion), and Christmas Comes But Once a Year.

By 1603, Jonson and Dekker collaborated again, on a pageant for the Royal Entry, delayed from the coronation of James I, for which Dekker also wrote the festival book The Magnificent Entertainment.

At this point Dekker becomes more interested in writing pamphlets; he had done so from the start of his career but now increases his work flow and his playwriting output noticeably declines. It appears also that his association with Henslowe also breaks at this point.

In Dekker's first rush of pamphleteering, in 1603, was The Wonderful Year, a journalistic account of the death of Elizabeth, accession of James I, and the 1603 plague, that combined a wide variety of literary styles to convey the extraordinary events of that year ('wonderful' here meaning astonishing). Its reception prompted two more plague pamphlets, News From Gravesend and The Meeting of Gallants at an Ordinary. The Double PP (1606) is an anti-Catholic tract written in response to the Gunpowder Plot. News From Hell (1606) is an homage to and continuation of Nash's Pierce Penniless. The Seven Deadly Sins of London (1606) continues the plague pamphlet series.

In 1604, he and Middleton wrote The Honest Whore for the Fortune, and Dekker contributed a sequel himself the following year. The Middleton/Dekker collaboration The Family of Love also dates from this time. Dekker and Webster also wrote Westward Ho and Northward Ho for Paul's Boys.

The failures of The Whore of Babylon (1607) and If This Be Not a Good Play, the Devil is in It (1611) left him crestfallen; the latter play was rejected by Prince Henry's Men before failing for Queen Anne's Men at the Red Bull Theatre.

After 1608, Dekker produced his most popular pamphlets: a series of "cony-catching" pamphlets that described the various tricks and deceits of confidence-men and thieves, including Thieves' Cant. These pamphlets, which Dekker often updated and reissued, include The Belman of London (1608, now The Bellman of London), Lanthorne and Candle-light, Villainies Discovered by Candlelight, and English Villainies. They owe their form and many of their incidents to similar pamphlets by Robert Greene.

Other pamphlets are journalistic in form and offer vivid pictures of Jacobean London. The Dead Term (1608) describes Westminster during summer vacation. The Guls Horne-Booke (1609, now The Gull's Hornbook) describes the life of city gallants, with a valuable account of behaviour in the London theatres. Work for Armourers (1609) and The Artillery Garden (1616) (the latter in verse) describe aspects of England's military industries. London Look Back (1630) treats 1625, the year of James's death, while Wars, Wars, Wars (1628) describes European turmoil.

The Roaring Girl, a city comedy that using the real-life figure 'Moll Cutpurse', aka Mary Frith, was another collaboration with Middleton in 1611.  The same year, he wrote another tragicomedy; Match Me in London.

In 1612, Dekker's lifelong problem with debt reached a crisis point when he was imprisoned in the King's Bench Prison on a debt of forty pounds to the father of John Webster. He remained there for seven years and continued writing pamphlets during these years but wrote no plays. He did however contribute six prison-based sketches to the sixth edition (1616) of Sir Thomas Overbury's Characters; and he revised Lanthorne and Candlelight to reflect what he had learned in prison.

Dekker also wrote a long poem Dekker His Dreame (1620) cataloguing his despairing confinement;

After his release, he collaborated with Day on Guy of Warwick (1620), The Wonder of a Kingdom (1623), and The Bellman of Paris (1623). He also wrote the tragicomedy The Noble Spanish Soldier (1622) and later reworked material from this play into a comedic form to produce The Welsh Ambassador (1623).

With John Ford, he wrote The Sun's Darling (1624), The Fairy Knight (1624), and The Bristow Merchant (1624).

Another play, The Late Murder of the Son upon the Mother, or Keep the Widow Waking (with Ford, Webster, and William Rowley) dramatized two recent murders in Whitechapel, and resulted in a suit for slander heard in the Star Chamber.

Dekker turned once more to pamphlet-writing, revamping old work and writing a new preface to his most popular tract, The Bellman of London.

Dekker's plays of the 1620s were staged at the large amphitheaters on the north side of London, most commonly at the Red Bull; only two of his later plays were seen at the more exclusive, indoor Cockpit Theatre.  The Shoreditch amphitheaters had become identified with the louder, less reputable play-goers, such as apprentices. Dekker's type of play seems to have suited them perfectly. Full of bold action and complementary to the values and beliefs of such audiences, his drama carried much of the thrusting optimism of Elizabethan drama into the Caroline era.

Dekker published no more work after 1632, and he it is thought he died on August 25th, 1632, recorded as "Thomas Dekker, householder". He is buried at St. James's in Clerkenwell.

Most of Dekker's work is lost. His disordered life, and his lack of a firm connection (such as Shakespeare had) with a single company, may have hindered the preservation or publication of manuscripts although perhaps twenty of his plays were published during his lifetime.